Classification Code," 1422 for limestone, 1423 for granite, 1429 for other crushed stone, 1442 for sand and gravel, and 1221 for coal. ... (tons per hour and tons per year). F. Capacity (gallons), maximum annual throughput, and date of manufacture of all ... lb/ton Crusher feed 0.007 0.007 Primary crushers 0.00070 0.2