This paper discusses the benefits of industrial minerals, their sources of supply, price and marketing trends, and their increasing use as substitute materials and "strategic" minerals.

CIM Bulletin, Vol. 75, No. 842, 1982

ANTONIO FONTANA, Environmental Control Technician, Kidd Creek Mines Ltd., Timmins, Ontario

Environmental problems encountered with the use of diesel equipment in underground mining operations are discussed. The concept and procedure of implementing the Health Effects Index equation as a means of quantitatively assessing an underground working environment is outlined and sample calculations are presented. Advantages and disadvantages of utilizing this method are also discussed.
Keywords: Underground mining, Health Effects Index, Ventilation, Diesel exhaust, Combustion, Sampling, Environmental control.