John Tumazos

Will you put a cement plug into that 300-meter column to stabilize it?

Is the engineering and safety decision that you want to wait for at least a 12-month seasonal precipitation cycle to be sure that the plug and pumps work exactly as intended?

explain some of the hurdles in engineering the Bagdad expansion

Could you explain in a little more detail the ability of Southern Copper to hold the cash cost at $0.77

Could you give us a little more precision on the timetable, please, for the El Pilar Deep Leach Project in Sonora and Tia Maria in Peru?

What are finished applications on a car for hot rolled aluminum

Could you explain the $27 drop in scrap cost given that the steel business is strong

what are the dimensions of qualification or the theaters the customer scrutinizes

When you balance out the input-output analysis, are the current economics better, the same, or worse than for your original business plan

What are the aluminum rolling mills of thirty-year or younger vintage? Good competitors that you'll be competing with

Could you give us some color contrasting the lightning blitzkrieg startup for the aluminum versus Sinton