and is based partly on a study of the practice as conducted at some of the most important copper-smelting works in America, and of the records of the advances in the metallurgy of copper contained ...

But new research based out of what some consider King Solomon’s fabled copper mines is upending ... and confined to the locations of the ancient smelting furnaces,” and well within current ...

The process produces significantly less pollution and carbon emissions than traditional copper smelting — but until recently, no one has figured out how to make it work efficiently for primary ...

LONDON (Reuters) -An unprecedented collapse in conversion fees spells hard times for the global copper smelting sector. The benchmark smelter treatment charges for next year have been set by ...

(Bloomberg) -- Glencore Plc is in talks to sell its copper business in the Philippines as the metal’s smelting industry reels from the lowest processing fees on record. The commodities giant is ...

LONDON, Dec 13 (Reuters) - An unprecedented collapse in conversion fees spells hard times for the global copper smelting sector. Smelters such as Jiangxi will receive just $21.50 per metric ton ...

LONDON (Reuters) - An unprecedented collapse in conversion fees spells hard times for the global copper smelting sector. The benchmark smelter treatment charges for next year have been set by ...