USSR: GOLD PRODUCTION AND SALES POTENTIAL

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CIA-RDP08S01350R000301010001-2
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T
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21
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December 27, 2016
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March 8, 2012
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1
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Publication Date: 
May 1, 1987
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REPORT
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Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Directorate of Intelligence SOV 87-10027CX IA 87-10030CX and Sales Potential USSR: Gold Production 249 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Directorate of Top Secret Intelligence ? USSR: Gold Production and Sales Potential This paper was prepared by Comments and queries are welcome and may be directed to the Chief, Economic Performance Division, SOYA Top Secret SOV 87-10027CX IA 87-10030CX May 1987 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Summary Information available as of I February 1987 was used in this report. and Sales Potential USSR: Gold Production currency earning capacity. We expect Soviet gold production-currently one-fifth of the world's annual output-to continue to grow slowly through the early 1990s, enabling Moscow to increase gold sales for hard currency without substan- tially reducing its gold reserve. Rising gold sales, however, probably will not offset the effect of continued low world oil prices on Moscow's hard nearly 40 percent of Soviet production. Soviet gold production grew less than 2 percent annually during 1981-85, after decades of growth exceeding 3 percent per year. The main reason for the slowdown was the sharp decline in the gold content of mined ore in many key areas, particularly in the Northeast Region, which accounts for equipment and spare parts needed to expand operations. We project that by 1990 annual production will reach roughly 330 to 360 metric tons, an increase of 2.5 to 12.8 percent over the 1985 level of roughly 320 tons, mainly as a result of gains in the utilization of existing capacity. We believe the Soviets can do little to boost production much above these levels, largely because most plants and mines will be operating close to capacity. Moscow has been making an effort to expand capacity for several years, but most construction is still at an early stage, and hard currency constraints may prevent purchases of the Western earthmoving for a large surge in output in the next decade. We believe that slow output growth will continue during the early 1990s. The grade of mineable ore in the Northeast Region will probably deteriorate further, and the amount of new capacity under construction indicates the Soviets probably are not making the preparations necessary currency in 1986, Beginning in late 1985, Moscow dramatically increased gold sales as one of several steps to help offset the decline in hard currency earnings from energy sales. (Other steps included borrowing more on international markets, increasing exports, and cutting back on imports.) During 1986, Moscow was able to hold total hard currency revenues near the 1985 level by selling roughly 350 tons of gold for about $4 billion. Sales in 1985 were about 190 tons. In comparison, oil sales earned $7-8 billion in hard Top Secret SOV 87-10027CX IA 87-10030CX May 1987 --" Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Although we expect a high level of sales to continue during the remainder of the decade to help offset continued lower revenues from energy exports, the Soviets may be concerned about the state of their gold reserve. Its value has been hit by a "double whammy" in recent years. First, the falling content of gold in mined ore in key regions led to a decline in the rate of output growth and increased the cost of production. Second, despite a buildup of stocks in the early 1980s, the drop in the world gold price devalued the Soviet reserve by $9 billion during 1981-85. Price increases last year helped recoup some of this "loss." Moscow's flexibility to sell gold during 1987-90 will be limited only by market capacity. Market experts indicate that annual sales will probably be limited to roughly 300 tons-although they could be as high as 450 tons in perhaps one or two years-if selling is done judiciously to avoid disrupting the market and causing a major, sustained price decline. At yearend 1986, the USSR had an estimated stockpiled reserve of 2,290 tons, and we project that 270 to 310 tons of surplus production (in excess of do- mestic use) could be sold annually during 1987-90 without drawing down this reserve. Assuming an average price of $400 per ounce, Moscow could earn as much as $4-6 billion annually from sales of 300 to 450 tons. Revenue from gold sales at these amounts, however, would cover only part of Moscow's expected hard currency shortfalls through 1990. Moscow could realize an annual earnings windfall of several billion dollars above our projections if South Africa's gold sales were substantially curtailed for an extended period-for example, in the highly unlikely event of intense nationwide strife bordering on civil war. In this scenario, prices would probably rise sharply, and the Soviet share of world sales could jump from roughly 15 percent in 1985 to 50 percent or more. Top Secret iv Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08S01350R000301010001-2 Top Secret Summary iii Role of Gold Sales in Foreign Trade 1 Recent Production Trends 1 Declining Gold Content 2 Low Utilization of Capacity 4 Rapid Buildup of the Stockpiled Reserve 7 Slow Growth in Output Projected To Continue 7 Continued Sales Flexibility 9 Appendixes C. Soviet Gold Mining and Processing 25X1 25X1 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08S01350R000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Figure 1 USSR: Estimated Gold Sales, 1966-86 1 Large grain 3 Jump in world 5 Low oil imports oil price earnings 2 Large rise in machinery 4 Record oil and pipe imports earnings I I te I I I I I I I I I I I I I 70 74 78 82 86a Top Secret vi Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08S01350R000301010001-2 5X1 Top Secret USSR: Gold Production and Sales Potential the West obviated the need for extra cash. Analysis of the trends in the Soviet hard currency balance of payments indicates that Moscow uses gold sales primarily as a financing mechanism rather than a trade commodity like oil. The Soviets generally sell more gold when they need a rapid infusion of cash, and less-even when prices are high-when they are in a good cash-flow position. During the mid-1970s, when Moscow needed to finance large purchases of grain and equipment, for example, gold sales were high (see figure 1). Hard currency crises in 1981 and 1982 forced considerable sales, even though a falling gold price cut into earnings. Gold sales were relatively small in 1983 and 1984 as record oil revenues from The sharp decline in hard currency export earnings beginning in 1985 has again sparked substantial gold 350 tons, earning $4 billion. sales. Oil production problems in 1985 cut annual Soviet oil revenues by nearly $4 billion, which Mos- cow partially offset by selling approximately 190 tons of gold worth just under $2 billion. Even though oil exports recovered somewhat in 1986, the steep drop in world oil prices resulted in another decline of $3-4 billion in hard currency sales. Estimated oil revenues of $7-8 billion last year were just half the peak earnings of $15.6 billion recorded in 1983. Moscow again responded with higher gold sales, selling an estimated 250 tons in July and August 1986. We believe that total gold sales in 1986 may have reached Because of the importance of gold sales as a source of financing, m in ini 25X1 25X1 Table 1 Major Gold Producers 1,000 714 674 619 211 251 294 321 Canada 75 51 51 86 United States 54 33 30 77 Brazil 5 5 40 62 Australia 19 16 17 57 The other figures are from Handbook of Economic Statistics. 1986, Central Intelligence Agency. Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08S01350R000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Too Secret Figure 2 USSR: Estimated Gold Supply, 1970-90 Stockpiled reserve i i i I i I i i I i i I i i 0 1970 74 78 82 86 87a 88a 898 90a 25X1 a Projected. Declining Gold Content The major cause of the slower growth in output in recent years was the sharp decline in the gold content of mined ores, particularly in the Northeast Region, the main source of the Soviet gold supply for the last 50 years (see figure 3 and inset on page 4).? The region's annual output peaked at an estimated 133 tons in 1977, but then fell to about 120 tons in 1980 and leveled off. In 1970, the Soviet press reported that it was necessary to process 28 percent more ore per Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Figure 3 Soviet Gold-Ore-Processing Plants Af-ff, Cep into the Soviet Union. Other boundary representation is not necessarily authoritative. The United States Government taa not recognized the incorporation of Estonia, Latvia, and Lithuania Turkey Saudi Arabia ~? ap?Y3o f Finland /tic Seams 'y- r Zod- Ararai Severo- Yeniseyskiy Plast 2 ~_,r.Plast 1 Aksu North Fr, Berekulskiy Aksu South Bestobe Tsentral'nyy Zholyml F Maykain K Tort- Tort- - R? Auezov Muruntau l-l Altynkan Samarkand FKazarm j Laptev Sea East Siberian rs'l __9e?Magadan, 00 Darasun Ag~(hskooyyg Bale , arasu`n73 Q Bering Sea Sea of Okhotsk 71 Tokur Sea of Japan Korea Japan l ~ ll 25X1 unit of gold production than in 1965. By 1975, another 50-percent increase in ore processing was required./ cause of limited equipment availability. unable to compensate with increased processing be- Earlier, the Soviets offset the declin- ing quality of ore by processing increasingly greater volumes, partly with the help of imported earthmov- ing equipment. After 1977, however, the Soviets were Substantial declines in the content of ores mined throughout East Siberia and the Urals were also a factor in the slow growth of national output. Most of Soviet Union *MOSCOW the mines are placers that are in a state of decline after having been worked for several years.' However, the overall contribution from these two areas was small; in 1985, we estimate these regions together produced less than 15 tons (less than 5 percent of national output). ' A placer deposit is an alluvial or glacial formation of sand or gravel that has been eroded from bedrock and has concentrated in low-lying areas such as stream valleys. In contrast, a lode deposit is a collection of gold ore veins. See appendix C for a discussion of Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08S01350R000301010001-2 Top Secret Shifting Output Away From the Northeast Region roughly 9 tons, or 50 percent of capacity. An analysis The deteriorating ore base and high production costs have prompted a shift in output away from the Northeast Re 'on to other areas the country (see figure 4. USSR reportedly only stay an average of two years. In addition, production costs are high, mainly be- cause of the limited mining season, difficulties asso- ciated with operating in the harsh environment, high labor costs, and periodic supply shortages that dis- rupt production. Operation of the region's placer mines, which account for at least 90 percent of output, is limited to only about six months each year, when flowing water is available for washing opera- tions (see appendix Q. The high level of stress exerted on earthmoving equipment when removing permafrost-the permanently frozen ground that lies beneath the top few centimeters-contributes to high failure rates. Relatively high wages must be paid to attract workers to the region. Nevertheless, labor shortages persist because of the harsh weather, inade- quate housing, and low level of social and cultural amenities. Worker turnover is also very high; gold industry workers who migratefrom other areas of the of Muruntau's operations showed an inadequate capacity to load and unload railcars that deliver ore from the mine to the process- ing plant (see figure 5 on page 6). An analysis of the,Zod-Ararat plant indicates that there were in use was probably an adequate capacity to deliver ore to the plant but that only two of four thickener tanks ? Soviet technical literature has not reported on the advantages of the RIP process since the 1970s, when the Soviets claimed this technology would increase output and cut production costs by 20 percent compared with conventional gold extraction techniques-claims discounted by US engineers. ? Articles in the Soviet press during the 1960s and 1970s indicated that at least five gold-ore-process- ing plants would be converted to the RIP process, but analysis 0 of known gold plants indi- cates that only the Muruntau and Zod-Ararat plants use this process. 25X1 25X1 25X1 25X1 25X1 Low Utilization of Capacity Muruntau and Zod-Ararat, two of the largest Soviet gold plants, have been operating below capacity since they began production in 1969 and 1976, respectively. Muruntau's output in 1985 was approximately 50 tons of refined gold, only two-thirds of its estimated capacity of about 75 tons. Zod-Ararat's output was Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08S01350R000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Figure 4 USSR: Geographical Distribution of Gold Output, 1970 and 1985 Percent 1970 Other 8 Northeast Other Siberia Region 11 62 a Excluding gold produced as a byproduct from the production of other metals, 36 metric tons in 1970 and 56 metric tons in 1985. Analysis I f seven smaller ore-processing plants shows an inadequate number of dump trucks t deliver ore from nearby mines, a possible indication o gold production problems. We estimate the total annual capacity of these plants in 1985 was roughly 28 tons, but production could have been as low as 14 tons. Northeast Region 45 77,25X1 25X1 25X1 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Too Secret Top Secret Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Table 2 USSR: Estimated Gold Production and Reserve Metric tons (except where noted) Produc- tion Net Sales Domestic Consump- tiona Yearend Reserve Market Value of Reserve (billion US $) 1970 211 3 39 1,624 1.9 1971 220 19 39 1,786 2.4 1972 242 158 40 1,830 3.4 1973 246 304 41 1,731 5.4 1974 257 131 42 1,815 9.3 1975 251 147 43 1,876 9.7 1976 269 328 45 1,772 7.1 1977 278 332 46 1,672 8.0 1978 290 401 47 1,514 9.4 1979 298 250 48 1,514 14.8 1980 294 80 48 1,680 33.1 1981 298 183 49 1,746 25.8 1982 304 91 50 1,909 23.0 1983 309 55 51 2,112 28.8 1984 314 86 52 2,288 26.5 1985 321 190 52 2,367 24.1 1986 326 350 53 2,290 27.1 Rapid Buildup of the Stockpiled Reserve Despite slow production growth, we estimate that Moscow's stockpiled gold reserve grew from 1,680 tons at the end of 1980 to 2,290 tons at the end of 1986 (see table 2 and figure 2). Even though the reserve increased, the potential market value actually declined by one-fourth during 1981-85 because of the nearly 50-percent fall in world gold prices. In 1980, the reserve had a value of about $33 billion; in 1985, the larger stockpile was worth approximately $24 billion. Price increases last year, however, helped recoup some of this "loss." This decline in value, coupled with slow production growth, may have caused Moscow to place increasing- ly tight restrictions on domestic use, which has tradi- tionally accounted for approximately one-sixth of annual production. These restrictions followed other long-established measures to keep domestic consumption low. Industri- al allocations of valuable materials are generally limited to high-priority uses for which there are no suitable substitutes. Since the 1960s, Moscow has attempted to reduce the amount of gold used in making jewelry.' Soviet citizens are also prohibited from holding gold for savings or investment purposes. 25X1 Gold used in electronics, jewelry, and dentistry proba- bly accounts for the bulk of consumption." Slow Growth in Output Projected To Continue Although Moscow is apparently making a concerted effort to expand capacity, most of the construction we have identified is at an early stage. Therefore, in- creases in production during 1986-90 will be mainly from gains in utilizing existing capacity. We project 25X1 10 Electronics may be the fastest growing domestic use in the USSR. Gold is used in advanced electronics applications where its relative- ly high electrical conductivity, temperature stability, corrosion resistance, and nonmagnetic properties compared with most other metals are important for increasing reliability. In the West, in 1985, the use of gold in jewelry accounted for approximately 60 percent of consumption. Dental and electronics applications ac- Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Soviet gold output will grow at an average annual rate of 0.5 to 2.5 percent during the period, reaching 330 to 360 tons in 1990: growth for the other metals and a continuing absence of incentives to motivate plant managers to ? Output from the Northeast Region will probably decline further, despite efforts to expand capacity, because of continued deterioration in the grade of mineable ore. Although stepped-up geological explo- ration over the past decade has located some new placer deposits that are now in various stages of development, their combined output will be too boost byproduct production." Shortages of hard currency could exacerbate the slow growth we project through 1990 by preventing or delaying the purchase of Western earthmoving equip- ment and spare parts needed for expanded operations. Output could be particularly affected in areas where the gold content of mined ore is declining and the Soviets need to increase the volume of ore processed. small to offset declines elsewhere in the region. In addition, we project no output from a new gold plant ? Annual production at the Muruntau and Zod- Ararat plants will probably continue to increase as gains are made in solving the likely technical prob- lems at both plants. ? We project about 3 tons of annual output during 1987-90 from a new plant at Plast in the Urals [ We project no output, however, from the new plant under construction near Kazarman in the Kirghiz SSR, another under construction at Auezov (Bakyr- chik) in Kazakhstan, and a new facility planned for the Tajik SSR because they will probably not be completed until the early 1990s.12 ? Outside the Northeast Region, a small increase will come from several small, scattered placer mines reportedly in various stages of development. ? Gold produced as a byproduct from other metals- mainly copper and to a lesser extent lead and zinc- will probably increase slowly and supply about one- sixth of annual production. We project slow output We believe there is little the Soviets can do to boost production much above the levels that we project through 1990. We project most existing plants and placer mines will be operating close to capacity. Roughly 10 tons of additional annual output could be realized by bringing production of the seven small plants up to full capacity. New placer deposits would probably not yield much additional gold even if developed on a priority basis because this type of deposit is generally small and typically located in remote areas of the eastern USSR where lack of infrastructure delays startup by several years. In addition, earthmoving equipment required for stepped-up mining operations would probably have to be imported for hard currency. Moscow could realize a small boost in its salable supply by implementing additional limits on domestic use, but such consumption is already at or near minimum levels. The Soviets could try to increase gold output by using heap leaching, a recovery meth- od recently implemented in the West that can be set " Although the Soviets recognize that there is a large potential to increase the production of nonferrous metals as a byproduct and have called for an increase in such production in 1986-90, the open press reported little progress in 1986. The performance of nonfer- rous metals plants is gauged primarily by the fulfillment of production quotas for the primary metal; little credit is generally 25X1 25X1 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Table 3 USSR: Projected Gold Supply Production Domestic Consumption Excess Reserves Remainin Production g If Annual Sales are 300 Tons Annual Sales are 450 Tons 1987 324 to 338 52 to 56 268 to 286 2,258 to 2,276 2,108 to 2,126 1988 325 to 349 53 to 57 268 to 296 2,226 to 2,272 1,926 to 1,972 1989 326 to 357 52 to 58 268 to 305 2,194 to 2,277 1,744 to 1,827 1990 329 to 362 52 to 60 269 to 310 2,163 to 2,287 1,563 to 1,687 up quickly, requires a much smaller capital invest- ment, and is less expensive to operate than traditional gold recovery methods." But we have seen no evidence that this technology is being used in the USSR. sales are spread over the year and among all the geographic markets. The Soviets may even be able to push sales to as much as 450 tons for one or perhaps output in the next decade. two years without causing a price decline, but the USSR would turn to the futures 25X1 markets to sell quantities in excess of 300 tons 25X1 ` 6 Sales at these levels could be met 25X1 mostly from current production, requiring only a small to moderate reduction in the stockpiled reserve (see table 3). At the estimated 1986 sales level of 350 tons, for example, Moscow would have had to dip into its reserve for only about 75 tons. 16 After 1990, we expect output to continue to grow slowly for several years. The grade of minable ore in the Northeast Region will probably deteriorate fur- ther, and the new capacity we have observed under construction indicates the Soviets probably are not making the preparations necessary for a large surge in Even with slow production growth well into the 1990s, Moscow's flexibility to sell gold will be limited only by market "capacity." Market ca acity projections are somewhat speculative. (Mos- cow could sell as much as 300 tons of gold annually on the open or "physicals" market and through direct bilateral sales without much effect on the price-if 11 Heap leaching can be used to recover gold from both placer and lode deposits and is often used to process low-grade ores. It involves distributing a weak cyanide solution over the top of an open mound or leveled heap of gold ore placed on an impermeable pad and collecting the gold-enriched solutions from the base of the heap. Depending on ore permeability, 67 to 95 percent of the gold can Sales averaging 300 tons would earn nearly $4 billion annually, assuming a price of $400 per troy ounce." Revenue from gold sales at these amounts, however, 15 These projections are based on the assumption that world gold market conditions do not substantially change. A stronger gold market and a higher price could moderately increase the market limit on Soviet sales. 16 Although today's market is substantially different, there is his- torical precedent for a large drawdown of the Soviet gold reserve. Moscow drew down its reserve to about 900 tons in 1965, the lowest Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Ton Secret below the peak of $32 billion in 1982-84. export earnings are likely to run some $7-10 billion would only partly ease Moscow's expected hard cur- rency shortfalls." Even if oil prices continue to rise, the volume of hard currency oil exports is projected to decline as oil production tapers off toward the end of the decade. With prospects poor for much growth in nonenergy exports, Moscow's annual hard currency Moscow could realize an annual earnings windfall of several billion dollars if the supply of South African gold sold on world markets was substantially cut back or curtailed for an extended period~A 25X1 prolonged halt in South African exports caused by intense nationwide strife bordering on civil war-an event we view as highly unlikely-could make the USSR the world's leading supplier. In such a scenar- io, prices would probably rise sharply and the Soviet share of world sales could jump from roughly 15 percent in 1985 to 50 percent or more." 25X1 19 The increase in the Soviet share of world sales would depend on how far Moscow would be willing to draw down its reserve to take advantage of a halt in South African sales, which were about 640 25X1 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Iq Next 7 Page(s) In Document Denied Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Appendix C Soviet Gold Mining and Processing mercury, leaving the relatively pure gold. Roughly two-thirds of the gold produced in the Soviet Union, including gold produced as a byproduct from the production of other metals, is from placer mines, and one-third is from lode mines. Placers are alluvial or glacial deposits of sand or gravel that have been eroded from bedrock and have concentrated in low- lying areas such as stream valleys. Placer gold occurs in relatively coarse grains or flakes that may also contain small amounts of other metals, such as silver. The gold can usually be separated from the sand or gravel by various washing methods, followed by amal- gamation. Washing uses flowing water as a medium to separate the heavier particles, primarily gold and heavy sands, from lighter sands. Amalgamation fur- ther concentrates the gold by using mercury, which adheres to the gold (forming an amalgam) but not to other heavy particles. The amalgam can then be subjected to intense heat (smelting) to separate the washed away. The Soviet gold industry primarily uses four washing methods to recover gold from placer deposits: sluicing, washing plants, dredges, and panning. Sluicing, the most common method of washing gold, generally uses bulldozers and other earthmoving equipment to re- move overburden and move the gold-bearing ore to a device called a buddle trough. A high-pressure water spray directed into the trough partially disintegrates the ore and separates heavier and coarser particles from lighter particles. The resulting slurry is then pumped to the top of a sluice, a long, sloping, rectangular trough with transverse bars or slats called riffles or a rough-textured mat on the bottom. As the slurry flows down the sluice, the heavy gold particles are caught in the grooves between the riffles or in the mat, and the lighter sand and gravel particles are Washing plants are frequently used where coarse gravels and fine clay-based soils are cemented into a hardened mass. The ore is usually prepared and moved to the plant as a slurry. A short primary sluice removes large gold particles, a revolving drum scrub- ber pulverizes and separates the coarse from the fine particles, and secondary sluices recover the remaining gold. Dredges are the most efficient method for recovering gold from large placer deposits. They are barges that contain an excavating system, equipment for separating and recovering valuable minerals, and a tailings disposal system. Dredges float in natural bodies of water or in ponds created when the deposit is excavated. Panning is usually used in small placers and areas where sufficient water to operate sluices or washing plants is not available. A lode deposit is usually defined as a collection of gold ore veins. The ore is mined by traditional open- pit or underground methods and transported to a gold plant where it is crushed and ground in a mill with water to a fine pulp. The pulp is typically passed through a gravity concentrator where some of the heavy gold particles settle out. They are then collected and taken to a refinery where most of the remaining impurities are removed. The bulk of the remaining gold in the pulp is generally recovered by some form of cyanide leaching, followed by refining. Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2 Top Secret Top Secret Declassified in Part - Sanitized Copy Approved for Release 2012/03/08: CIA-RDP08SO135OR000301010001-2