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

How much was the impact when Obrador wanted to halt the open pits in Mexico? Did that delay it?

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?

Is there enough scrap aluminum to build a second 650,000 ton Columbus Rolling Complex

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