| Term | Explanation | Editorials |
| LD EQUIVALENT | ld Equivalent A term used to describe another asset priced at ?market price? for its main production For example, if a ld producing mining company also produces silver, it can be calculated as follows:- Market price for ld US$400 per ounce Market price for silver US$ 7 per ounce I f the mining company produces 10,000 ounces of silver, this would have a value of US$70,000. herefore, the silver could be used as a credit for US$70,000 worth of ld, which equates to ounces of ld:- 175 x US$400 = ld equivalent US$70,000 In mining company reports or refinery agreements, production of silver (and sometimes other metals) is converted into the equivalent ounces of ld using the current ratio of silver-ld prices. For example, with silver at $5 per ounce and ld at $280 per ounce, 70,000 ounces of silver would be credited as 1,250 ounces of ld. | Search Editorials |
| LD FINGERPRINTING | ld Fingerprinting | Search Editorials |
| LD LOANS | ld Loans | Search Editorials |
| LAMPROPHYRE | Lamprophyre An igneous rock that occurs in dykes and sills that is made up of dark minerals that may contain diamonds. ee also: Kimberlite www.hubbardbrook.org/.../ geology/geology.htm | Search Editorials |
| LAND/LAND HOLDING | Land / Land Holding | Search Editorials |
| LAVA | Lava A generic name given to molten rock solution ejected by volcanoes. | Search Editorials |
| LAYBACK | Layback he amount of waste rock that must be mined to achieve a safe working angle of an open pit wall in order to avoid any dangerous landslides. ee also Stripping Ratio. | Search Editorials |
| LEACHING | Leaching A method of recovering precious metals from the ore by dissolving the ld from a solution of cyanide. see als Biological Leaching and Heap Leaching. | Search Editorials |
| LEAD | Lead A lead is a deep deposit of gravel, normally below a layer of rock containing ld and is usually associated with alluvial mining. | Search Editorials |
| LEADER | Leader An auriferousquartzvein. | Search Editorials |
| LEVEL | Level he workings or tunnels of an underground mine that are on the same horizontal level. | Search Editorials |
| LODE/DEPOSIT | Lode / Lode Deposit A mineral deposit where the ld is spread throughout the ore body or structured in a network of narrow veins. | Search Editorials |
| LONDON 'OD DELIVERY' LIST | London 'od Delivery' List A list of Refiners and Assayers whose ld and silver meet the minimum specifications set by the London Bullion Market Association (LBMA) required for settlement against certain bullion contracts. | Search Editorials |
| LONGWALL | Longwall Mining | Search Editorials |
| LOW GRADE | Low Grade Ore within a mine which has a much lower ld content than the average run of the mine. Low grade ore may be mined as part of an ore body when it is not below the economic cut-off grade and is usually blended with higher grade ore to produce an average grade. Low grade mineralization may also be mined, if practical, if it becomes economic, such as in periods when the ld price is high or when new technology is introduced. Ore bodies, notably in the United States and Western Australia, which have a very low ld content of one gram per tonne or less, can now be mined by heap leaching and carbon-in-pulp recovery. Such new technology has made payable many deposits that were previously considered uneconomic.see als Grade | Search Editorials |