THE Canadian Department of Mines has issuedan interesting report of some 184 pages, profusely illustrated, upon the copper smelting industries of Canada, from the pen of Dr. Alfred W. J.

Copper slag is a byproduct generated during the smelting of copper ... particularly the use of sodium carbonate to enhance the recovery of copper from copper slag. This method has shown promising ...

Sue Surkes contributed to this report. The post Ancient copper smelting at ‘King Solomon’s mines’ was less toxic than today’s industry appeared first on The Times of Israel.