Lead-zinc ore[2] | do | 173 | 180 | 168 | 173 | n.a. Electrolytic copper| do | 14 | 24 | 37 | 38 | n.a. Lead | do | 40 | 93 | 93 | 97 | n.a. Zinc | do | 17 | 66 | 75 | 76 | n.a. Cement | do | 1,568 | 2,681 | 3,512 | 3,668 | 3,880 Timber |thousand | | | | | | cubic yards | 5,046 | 5,680 | 5,140 | 5,166 | 4,923 Paper |thousand | | | | | | metric tons | 54 | 85 | 187 | 200 | 215 Nitrogen | | | | | | fertilizers[3] | do | 84 | 246 | 276 | 287 | 306 Urea[3] | do | 2 | 15 | 228 | 315 | 256 Superphosphate[4] | do | 41 | 94 | 136 | 148 | 146 Pesticides[5] | do | 2 | 6 | 12 | 15 | 16 Automobile tires | do | 172 | 327 | 333 | 546 | 730 Internal combustion|thousand | | | | | engines | horsepower | 155 | 179 | 280 | 229 | 250 Metalcutting |thousand units | | | | | machine tools | | 3,145 | 8,063 |11,160 |13,945 |14,636 Presses | do | 203 | 609 | 944 | 977 | 763 Textile looms | do | 505 | 555 | 1,088 | 676 | 437 Tractors | do | ... | 2,800 | 2,961 | 3,493 | 4,668 Freight cars | do | 2,007 | 1,583 | 1,550 | 1,991 | 2,016 Electric forklift | do | 3,104 |16,562 |22,673 |29,641 |30,202 Telephones | do | 80 | 57 | 245 | 349 | 416 Ships | do | 12 | 11 | 26 | 27 | n.a. Radio sets | do | 157 | 130 | 139 | 145 | 148 Television sets | do |[6]... | 74 | 158 | 193 | 158 Refrigerators | | | | | | (domestic) | do | 3 | 41 | 91 | 134 | 140 Electric washing | | | | | | machines | | | | | | (domestic)| | do | 38 | 89 | 184 | 56 | 57 Cotton textiles |million yards | 239 | 355 | 349 | 349 | 355 Woolen textiles | do | 20 | 31 | 25 | 29 | 31 Footwear[7] |million pairs | 7,534 |10,062 |15,671 |13,627 |16,095 Leather shoes | do |(4,251)|(5,154)|(5,781)|(4,105)|(4,694) Rubber footwear | do |11,239 |12,683 |13,485 |12,805 |13,683 -------------------+----------------+-------+-------+-------+-------+------- n.a.--not available.