AIR CLASSIFICATION OF F AGGREGATES
There were to be thirty-seven playgrounds, twenty schools. There were to be a hundred and thirty-three miles of street, paved with an inch and a half of No. 2 macadam on an aggregate base. —Joan Didion, New Yorker, 26 July 1993; Their success at opening up new sources of supply, generating and servicing demand, and connecting new markets with the processing …