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“One metric ton of ore/rock/sand/soil has 11/30 metric tons of CO2, 145/9,072 metric tons of Al...Ore, rock, sand, soil
“Coal is a combustible black or dark brown rock consisting mainly of carbonized plant matter...Coal
“Recycling one kWh of energy can save 1/7 pounds of Al, 50 kilograms of limestone, 4/5 pounds of...Energy recycling
“On the occasion of world environment day there is an urge to understand the implications and...Green mania
This category has the following 3 subcategories, out of 3 total.
Pages in category "Coltan conservation"
The following 7 pages are in this category, out of 7 total.