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only 55 percent to 65 percent of purchased steel scrap.

Old scrap contributed 9.9 percent of ferrous metallics

inputs to steel production in 1950 and only 6.7 percent

in 1960.

 Tables 21 and 22 show the amounts of iron and

copper scrap potentially recoverable by product category

for recent periods. Allowances are made for wear,

corrosion, inaccessibility, and exports.

 The amount of scrap recovered per period of time

depends upon the physical amounts of scrap available

and upon costs of scrap collection and processing

relative to scrap prices. If real costs of new copper

and iron were to increase, the resulting increase in

demand for scrap as a substitute would tend to increase

the price of scrap and increase the percent recovered.

 Although large amounts of metal scrap have been

reused, large amounts have also been discarded. Accord-

ing to the data of Tables 21 and 22, almost 20 percent

of the iron and 30 percent of the copper in final goods

produced in 1960 will be lost. Further, recent trends

have increased the share of metals going to uses from

which metals recovery is difficult.

 In 1965, Public Law 89-272 was passed by the

89th Congress in response to the proliferation of

unsightly burial grounds for old automobiles, refrig-

erators and the like. The purposes of the act were: