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Gold/Mining/Energy : Gold Price Monitor
GDXJ 147.31+2.1%4:00 PM EST
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To: GraceZ who wrote (80231)12/26/2001 1:31:00 PM
From: E. Charters  Read Replies (1) of 116927
 
Kodak reclaims 90+% of all its silver within one year, mostly from commercial reel film and waste. It operates with about 20 million ounces rotating and is the largest single consumer of silver in the world. Videotape has cut into this market considerably but the best film is still made with silver reel and this will continue at the high end.

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I see hundreds of constructions all over. Modes have changed and materials are progressing to composites such as chip and fibre board and composite/glue construction and steel beam/joist. But overwhelmingly the standard is 2X4 frame, board joists, plywood wall and ceiling, floor. Wood is cheap, light, easy to work and flexible, forgiving, repairable. Outers are bricks and mortar almost exclusively.

Composites have been around since the Pharaohs. Straw brick is actually a good idea. Concrete is a composite. So is plywood in a way. But Pete Polymers are getting rare and cher. I don't see them making inroads unless we can grow them. Composites will increase however. It is a stunted science but it would be easy to make a beam from Xcrete and fibre that would exceed wood's and concrete's tensile/weight ratio and be cheap and workable as well. Materials must be local to get world wide use. Pretensioned beams are actually dead easy to make and not expensive. It is not rocket science. There will be ways to lighten them. Insulation materials that resist fire can be made with modern methods that equal styrofoams' effectiveness. But its future science. What is going up now is 20% new and the rest 1920's construction tech.

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