Commercial-Purity Copper

Commercial Copper Rods, Commercial-Purity Copper Rods & Bars The copper rods were intended as reference materials for spectrographic purposes. They were prepared and tested for homogeneity in the Mines Branch, between 1964 and 1966; the starting materials were donated by Canadian Copper Refiners Limited, Montreal, Quebec, and Metals and Alloys Limited, Leaside, Ontario. To dope [...]