Show americas most valued possession the war effort would not got get very far without coal it Is used in making practically per cent of all steel it supplies 65 per cent of the mechanical energy required to run the machines that make the guns tanks planes and other arms and war equipment it supplies the power for 94 per cent of the nati nations oils locomotives it provides in whole or in part the basic materials for all high explosives and the tour four most important war chemicals eighty five per cent of nil all 4 war plastics require processed bituminous I 1 coal as a base in addition to this 41 per cent of the homes in the united states depend on coal fur for haal the annual value of bituminous coal mined in this country exceeds the value of all metallic minerals combined |