Fully up-to-date, the directory includes all the mining companies (producers of coal, gold, copper, silver, tin, lead, zinc, uranium, rare earth, industrial minerals, etc) plus the companies that ...
Ans: KDM Gold is a type of gold which comprises 92 per cent pure gold and the remaining 8 per cent contains cadmium alloy hence the term KDM gold came into usage. The mixture of cadmium was done ...