Displaying 769 - 792 of 970

Optimal Clothes Washer Replacement Policy for Households

-
Conference Proceeding
The energy efficiency of the average clothes washer in the U.S. improved by 88.4% from 1981 to 2003. Replacement of old vertical-axis washers with new horizontal-axis washers results in decreased oper...

Copper Mines Above and Below the Ground

-
Journal Article
For years, resource geologists have estimated the amount of minerals and other deposits suitable for exploitation. On the local level, these projections provide information for investment decisions...