Several economic comparisons have been made between carbon systems and Merrill-Crowe systems. One of these, a systematic comparison completed by DeMent and King (1982) is
The Code of Federal Regulations (Title 30, Chapter 1, Part 57, Section 57.5-1) requires that metal and nonmetal mines shall maintain a time weighted average
The mission of the Bureau of Mines minerals research program is to help improve minerals processing technology so that the Nation’s mineral needs can be
You wonder how to enter the burn off program in our programmable kiln temperature controller, so today we’re going to show you an Example of
Conveyor belt fires can present a serious hazard in the confined environment of an underground coal mine. To minimize this hazard, Federal regulations were enacted
Elutriation Another enhanced gravity device was patented in 1935 by A. N. MacNicol (Figure 4). It is also a truncated cone but ribs divide the
Mechanism of Uranium Leaching: Uranium leaching with sulphuric acid is a complex process governed by chemical dissolution, and the oxidation of uranium. It is controlled by
Previous research by the U.S. Bureau of Mines showed that autoclave cyanide leaching of used automobile exhaust catalysts for recovery of platinum group metals (PGM)
The use of thiourea, (CS(NH2)2 as a complexing/extracting agent for gold and other precious metals has shown promise for implementation in the mining/metals industry. Laboratory
As well as metal working, welding or cutting, downdraft tables are also used for human dissection tables although rim exhausts are usually used for this