 | Arsen Darnay, William E. Franklin - 1972 - 352 páginas
...Recycling It is reasonable to assume that a secondary material, one that has already been processed, should be a more attractive raw material to industry than a virgin material that must be extracted or harvested and processed. Why, then, the relatively low recycling rate found... | |
 | United States. Congress. Senate. Committee on Public Works - 1973 - 1068 páginas
...wates are lower than the effluents from production systems that rely on virgin resources." Solid Waate Generation. Per capita materials consumption equates...materials are concentrated while wastes and products from then are dispersed and sensitive to transportation costs; (4) the sorting and upgrading of mixed wastes... | |
 | 1974 - 282 páginas
...the rule. It is reasonable to assume that a secondary material, one that has already been processed, should be a more attractive raw material to industry than a virgin material that must be extracted or harvested and processed. The secondary material is already purified and concentrated;... | |
 | United States. Office of Solid Waste Management Programs - 1974 - 82 páginas
...the rule. It is reasonable to assume that a secondary material, one that has already been processed, should be a more attractive raw material to industry than a virgin material that must be extracted or harvested and processed. The secondary material is already purified and concentrated.... | |
 | United States. Congress. House. Committee on Interstate and Foreign Commerce - 1974 - 180 páginas
...the rule. It is reasonable to assume that a secondary material, one that has already been processed, should be a more attractive raw material to industry than a virgin material that must be extracted or harvested and processed. The secondary material is already purified and concentrated... | |
 | H. Lanier Hickman - 2003 - 616 páginas
...Affecting Recycling The authors assumed that a secondary material, one that had already been processed, should be a more attractive raw material to industry than a virgin material that must be extracted or harvested and processed. Why then, they questioned, was there such a relatively... | |
| |
Historical data on other materials are not readily available in aggregate form, but declining recovery is generally the rule. It is reasonable to assume that a secondary material, one that has already been processed, should be a more attractive raw material... 