Show americas inaus industrial trial coal stock block pile to la the lie wot id a latest largest tolaf ing about 19 10 million tons of which nore than halt owned by eleo trie utilities use Us of industry il explosives explosive reached a new high in the united att states in 1959 1953 when the coal industry stepped up its lt use of e ex E pl olve ti 24 per cent to snore inore biad pa 1 1 nine million children one out of every four in them the nation a schools ech need some form of eye care according to td the national society tor for ohp the prevention of blindness t |