MA28C -- INDUSTRIAL GASES 1993 MA28C(93)-1 Issued September 1994 U.S. Department of Commerce Economics and Statistics Administration BUREAU OF THE CENSUS Table 1. PRODUCTION AND SHIPMENTS OF SELECTED INDUSTRIAL GASES: 1990 TO 1993 (Value in millions of dollars) Shipments Product Product Unit code and year of measure Production Quantity Value 28132 00 Acetylene: 1993..................Billion cu. ft...... 5.3 2.8 141.8 1992..................do.................. 5.3 2.9 141.6 1991..................do.................. 5.5 2.9 135.7 1990..................do.................. 5.5 3.7 153.9 28133 00 Carbon dioxide: Gas: 1993................1,000 short tons.... 6,813.6 5,885.4 73.5 1992................do.................. 6,936.5 6,538.5 r/75.0 1991................do.................. 7,949.4 7,644.7 76.3 1990................do.................. 7,890.4 7,890.4 87.8 Liquid: 1993................do.................. 5,596.4 5,422.3 234.4 1992................do.................. r/5,542.0 r/5,372.9 r/230.4 1991................do.................. 5,001.2 4,853.2 267.4 1990................do.................. 4,925.2 4,877.2 262.2 Solid (dry ice): 1993................do.................. 292.6 291.8 29.0 1992................do.................. 262.0 261.2 27.2 1991................do.................. 267.2 266.6 30.6 1990................do.................. 260.8 260.7 30.0 28135 00 Nitrogen: 1993..................Billion cu. ft...... 791.5 769.8 1,069.4 1992..................do.................. 818.5 792.9 981.5 1991..................do.................. 769.9 753.1 953.7 1990..................do.................. 749.5 723.5 791.1 28136 00 Oxygen: 1993..................do.................. 547.0 521.7 864.4 1992..................do.................. 525.2 498.9 767.3 1991..................do.................. 469.7 446.6 767.0 1990..................do.................. 462.3 436.2 662.9 28137 pt. Hydrogen: 1993..................do.................. 221.2 96.5 275.1 1992..................do.................. 162.2 84.3 259.7 1991..................do.................. 152.7 79.9 226.8 1990..................do.................. 147.8 72.1 226.4 r/ Revised by 5 percent or more from previously published figures. pt. Part. Address inquiries concerning these figures to U.S. Department of Commerce, Bureau of the Census, Industry Division, Washington, D.C. or contact Suzanne Pasdar, (301)763-4485. Table 2. QUANTITY OF PRIMARY PRODUCTION OF SPECIFIED INDUSTRIAL GASES: 1993 AND 1992. 1993 1992 Shipments Shipments Product Unit of code Product description measure Production Quantity Value Production Quantity Value 2813- -- Industrial gases.....................................(X)............... (X) (X) 3,185,502 (X) (X) 3,002,751 28132 00 Acetylene 1)............................................Mil. cu. ft....... 5,262 2,769 141,773 5,306 2,946 141,584 28132 11 Produced for compression, including cylinder and pipeline.................................do................ 852 804 78,913 734 729 r/74,977 28132 21 Produced for pipeline shipment (excluding that shipped to be compressed) and for consumption in this plant.....................do................ 4,410 1,965 62,860 4,572 2,217 66,607 28133 00 Carbon dioxide 2).......................................Short tons........ 12,702,620 11,599,463 336,887 12,740,457 12,172,684 r/332,617 28133 01 Gas (include amounts produced and liquefied)............................................do................ 6,813,551 5,885,358 73,522 6,936,515 6,538,510 r/74,980 28133 02 Liquid (include amounts produced and used to make dry ice).................................do................ 5,596,407 5,422,324 234,387 r/5,541,967 5,372,954 r/230,408 28133 31 Solid (dry ice).......................................do................ 292,662 291,781 28,978 261,975 261,220 27,229 28135 00 Nitrogen 3).............................................Mil. cu. ft....... 791,507 769,788 1,069,443 818,499 792,920 981,453 Gas produced by: 28135 22 Cryogenic on-site and pipeline AND 28135 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies...........do................ 531,908 534,160 444,483 571,203 570,301 413,688 Captive uses for consumption in this plant: 28135 24 Cryogenic processes AND 28135 26 Noncryogenic processes (psa, vpsa, membranes, etc.)..do................ 4/22,916 (X) (X) 4 r\24,085 (X) (X) Liquid produced for: 28135 12 Merchant shipment.....................................do................ 223,746 222,881 582,319 210,746 210,257 526,552 28135 32 Consumption in this plant.............................do................ (4) (4) (X) (X) 28135 34 Supplemental shipments or uses........................do................ 12,937 12,747 42,641 12,465 12,362 41,213 28136 00 Oxygen..................................................do................ 546,939 521,684 864,438 525,234 498,904 767,276 Gas produced by: 28136 22 Cryogenic on-site and pipeline AND 28136 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies...........do................ 407,776 407,790 534,217 389,273 389,290 503,073 Captive uses for consumption in this plant: 28136 24 Cryogenic processes AND 28136 26 Noncryogenic processes (psa, vpsa, membranes, etc.)..do................ 5/25,286 (X) (X) 5/26,351 (X) (X) Liquid produced for: 28136 12 Merchant shipment.....................................do................ 104,444 104,769 305,251 101,420 101,426 r/237,481 28136 32 Consumption in this plant.............................do................ (5) (5) (X) (X) 28136 34 Supplemental shipments or uses........................do................ 9,433 9,125 24,970 8,190 8,188 26,722 28137 00 Elemental gases and other industrial gases n.e.c........Mil.cu.ft......... (X) (X) 732,667 (X) (X) 738,982 Argon..................................................do................ (D) (D) (D) (D) (D) (D) 28137 11 Argon, crude..........................................do................ (D) (D) (D) (D) (D) (D) 28137 15 Argon, high purity, produced for cylinder and bulk delivery and pipeline shipments, and for consumption in this plant.........................................do................ 15,818 14,803 254,222 13,729 13,525 259,182 Helium 6)..............................................do................ 3,445 3,445 (X) 3,403 3,403 (X) Hydrogen 7)............................................do................ 221,212 96,458 275,051 162,213 84,291 259,690 Gas produced for: 28137 22 Merchant shipment AND 28137 32 Pipeline and on-site use.............................do................ 8/113,993 96,458 275,051 8/84,850 84,291 259,690 28137 42 Consumption in this plant............................do................ 107,219 (X) (X) 77,363 (X) (X) Liquid produced for: 28137 52 Merchant shipment AND 28137 62 Supplemental shipments or uses.......................do................ (8) (8) (8) (8) (8) (8) 28137 90 Other elemental gases..................................(X)............... (X) (X) 71,795 (X) (X) 77,933 28137 71 Nitrous oxide AND 28137 98 Other compressed and liquefied gases 9)................(X)............... (X) (X) 115,860 (X) (X) 125,591 28130 00 Industrial gases n.s.k..................................(X)............... (X) (X) 40,294 (X) (X) 40,839 Note: N.s.k. represents the value of shipments for establishments which did not provide detailed information by type of product. These establishments, typically with less than 5 employees, are not included on the MA28C mailing panel. The n.s.k. value has been estimated based on the rate of change for the reporting establishments applied to the previous year's figures. (D) Data withheld to avoid disclosing figures for individual companies. N.e.c. Not elsewhere classified. N.s.k. Not specified by kind. r/ Revised by 5 percent or more from previously published figures. (X) Not applicable. 1/ Excludes information from railroad ships, shipyards, welding shops, and small establishments using portable generators. 2/ Excludes quantities produced and consumed in plants manufacturing soda ash or urea. Carbon dioxide gas figures should be used with caution since the data includes figures for gas produced in the production of petroleum whose data is difficult to measure. 3/ Excludes amounts produced and consumed in the manufacturing of synthetic ammonia or ammonia derivatives. 4/ Product code 28135 32 has been combined with product codes 28135 24 and 28135 26 to avoid disclosing figures for individual companies. 5/ Product code 28136 32 has been combined with product codes 28136 24 and 28136 26 to avoid disclosing figures for individual companies. 6/ Source: U.S. Department of Interior, Bureau of Mines. 7/ Excludes amounts vented, used as fuel, etc., and amounts produced and consumed in the manufacturing of synthetic ammonia and methanol, but includes an unspecified amount produced for sale or interplant transfer to plants consuming this gas in the production of ammonia. Also excludes amounts produced by the ammonia dissociation process (cracking of ammonia). Also excludes amounts produced in petroleum refineries for captive use. 8/ Product codes 28137 52 and 28137 62 are combined with product codes 28137 22 and 28137 32 to avoid disclosing figures for individual companies. 9/ Excludes hydrocarbon gases such as propane, butane, and propylene, or halogenated hydrocarbons and cyclopropane, which are published in the U.S. International Trade Commission annual report, Synthetic Organic Chemicals. Also, excludes sulfur dioxide and chlorine data, which are shown in Current Industrial Reports Series, MA28A(93)-1 Inorganic Chemicals. Table 3. PRODUCTION AND SHIPMENTS OF ACETYLENE, BY GEOGRAPHIC AREA: 1993 AND 1992 1993 1992 Geographic area Shipments Shipments Production Quantity Value Production Quantity Value Total................................ 5,262 2,769 141,773 5,306 2,946 141,584 Northeast Region......................... 80 79 5,341 68 70 r/6,791 North Central Region..................... 225 209 20,194 r/234 r/228 r/21,007 East North Central..................... 160 144 13,867 r/169 r/162 r/14,858 West North Central..................... 65 65 6,327 65 66 6,149 South Region............................. 4,800 2,320 99,322 4,858 2,498 97,659 South Atlantic and East South Central.. 647 642 39,916 609 607 37,625 West South Central..................... 4,153 1,678 59,406 4,249 1,891 60,034 West Region.............................. 157 161 16,916 r/146 r/150 r/16,127 Mountain............................... 26 26 2,488 r/26 r/26 2,437 Pacific................................ 131 135 14,428 r/120 r/124 r/13,690 See note at end of table 6. r/ Revised by 5 percent or more from previously published figures. Table 4. PRODUCTION AND SHIPMENTS OF CARBON DIOXIDE, BY GEOGRAPHIC AREA: 1993 AND 1992 Liquid Solid (dry ice) Geographic area Shipments Shipments Production Quantity Value Production Quantity Value 1993 Total................................. 5,596,407 5,422,324 234,387 292,662 291,781 28,978 Northeast Region........................ (1) (1) (1) (1) (1) (1) North Central Region.................... 1,478,337 1,398,295 57,210 171,147 170,539 15,533 East North Central.................... 1/1,042,367 1/1,000,092 1/47,019 1/86,568 1/86,660 1/8,996 West North Central.................... 435,970 398,203 10,191 84,579 83,879 6,537 South Region............................ 2,951,177 2,888,465 116,795 69,088 68,741 6,807 South Atlantic and East South Central. 1,850,169 1,837,263 71,184 43,894 43,816 4,090 West South Central.................... 1,101,008 1,051,202 45,611 25,194 24,925 2,717 West Region............................. 1,166,893 1,135,564 60,382 52,427 52,501 6,638 Mountain.............................. 378,569 330,206 18,324 18,114 18,114 1,447 Pacific............................... 788,324 805,358 42,058 34,313 34,387 5,191 1992 Total................................. 5,541,967 5,372,954 r/230,408 261,975 261,220 27,991 Northeast Region........................ (1) (1) (1) (1) (1) (1) North Central Region.................... 1,435,853 1,359,658 r/55,035 166,614 165,357 15,320 East North Central.................... 1/893,138 1/848,360 1/38,277 1/84,151 1/84,163 1/8,943 West North Central.................... 542,715 511,298 r/16,758 82,463 81,194 6,377 South Region............................ r/2,965,185 r/2,863,846 r/115,517 51,156 51,658 6,056 South Atlantic and East South Central. r/1,898,122 r/1,871,567 r/74,955 (D) (D) (D) West South Central.................... 1,067,063 992,279 r/40,562 (D) (D) (D) West Region............................. 1,140,929 1,149,450 r/59,856 44,205 44,205 6,615 Mountain.............................. 359,606 337,948 r/15,761 (D) (D) (D) Pacific............................... 781,323 811,502 r/44,095 (D) (D) (D) See note at end of table 6. r/ Revised by 5 percent or more from previously published figures. 1/ Totals for Northeast region are combined with East North Central to avoid disclosing figures for individual companies. Table 5. PRODUCTION AND SHIPMENTS OF ARGON AND HYDROGEN, BY GEOGRAPHIC AREA: 1993 AND 1992 ARGON 1993 1992 Geographic area Shipments Shipments Pro- Quan- Pro- Quan- duction tity Value duction tity Value Total............................ (D) (D) (D) (D) (D) (D) Northeast Region...................... 1,212 1,206 21,019 1,181 1,183 20,642 North Central Region.................. (D) (D) (D) (D) (D) (D) East North Central Division......... 6,543 6,539 103,573 5,091 5,093 103,573 West North Central Division......... (D) (D) (D) (D) (D) (D) South Region.......................... 8,231 7,226 119,277 7,528 7,322 126,237 South Atlantic Division............. 1,589 1,591 32,230 1,512 1,512 31,011 East South Central Division......... 1,245 1,245 18,721 1,323 1,116 19,640 West South Central Division......... 5,396 4,390 68,326 4,693 4,694 75,586 West Region........................... 1,116 1,119 22,856 1,171 1,166 23,554 HYDROGEN 1993 1992 Geographic area Shipments Shipments Pro- Quan- Pro- Quan- duction tity Value duction tity Value Total............................ 221,212 96,458 275,051 162,213 84,291 259,690 Northeast Region...................... 17,972 8,508 34,294 9,762 8,358 27,946 North Central Region.................. 20,872 3,802 11,346 r/12,016 r/2,772 8,893 East North Central Division......... (D) (D) (D) (D) (D) (D) West North Central Division......... (D) (D) (D) (D) (D) (D) South Region.......................... 165,357 (D) (D) 128,708 (D) (D) South Atlantic Division............. 7,747 2,339 8,917 8,703 2,356 (D) East South Central Division......... 3,359 (D) (D) 3,942 (D) (D) West South Central Division......... 154,251 78,653 201,684 116,063 67,646 193,662 West Region.......................... 17,011 (D) (D) 11,727 (D) (D) r/ Revised by 5 percent or more from previously published figures. See note at end of table 6. Table 6. PRODUCTION AND SHIPMENTS OF LIQUID NITROGEN AND OXYGEN PRODUCED FOR MERCHANT SHIPMENT, BY GEOGRAPHIC AREA: 1993 AND 1992 NITROGEN 1993 1992 Geographic area Shipments Shipments Production Quantity Value Production Quantity Value Total........................ 223,746 222,881 582,319 210,746 210,257 526,552 Northeast Region.................. 40,565 41,377 108,019 38,099 37,489 80,027 North Central Region.............. 67,414 65,956 157,321 60,795 60,898 146,821 East North Central Division..... (D) (D) (D) (D) (D) (D) West North Central Division..... (D) (D) (D) (D) (D) (D) South Region...................... 74,989 74,810 200,208 70,539 70,570 183,292 South Atlantic Division......... 32,877 32,868 88,844 29,662 28,663 73,916 East South Central Division..... 13,820 13,544 34,583 12,842 12,809 32,132 West South Central Division..... 28,292 28,398 76,781 28,035 29,098 77,244 West Region....................... 40,778 40,738 116,771 41,313 41,300 116,412 OXYGEN 1993 1992 Geographic area Shipments Shipments Production Quantity Value Production Quantity Value Total........................ 104,444 104,769 305,251 101,420 101,426 273,481 Northeast Region.................. 18,172 18,438 49,951 15,937 15,956 37,201 North Central Region.............. 27,360 27,431 72,029 27,797 27,819 69,969 East North Central Division..... (D) (D) (D) (D) (D) (D) West North Central Division..... (D) (D) (D) (D) (D) (D) South Region...................... 44,418 44,366 137,087 42,692 42,655 119,970 South Atlantic Division......... 21,635 21,628 67,792 20,509 20,222 54,289 East South Central Division..... 10,875 10,846 29,963 10,241 10,501 26,816 West South Central Division..... 11,908 11,892 39,332 11,942 11,932 38,865 West Region....................... 14,494 14,534 46,184 14,994 14,996 46,341 Note: Northeast Region: Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, and Pennsylvania. North Central Region: East North Central Division: Ohio, Indiana, Illinois, Michigan, and Wisconsin. West North Central Division: Minnesota, Iowa, Missouri, North Dakota, South Dakota Nebraska, and Kansas. South Region: South Atlantic Division: Delaware, Maryland, District of Columbia, Virginia, West Virginia, North Carolina, South Carolina, Georgia and Florida. East South Central Division: Kentucky, Tennessee, Alabama, and Mississippi. West South Central Division: Arkansas, Louisiana, Oklahoma, and Texas West Region: Mountain: Montana, Idaho, Wyoming, Colorado, New Mexico, Arizona, Utah, and Nevada. Pacific: Washington, Oregon, California, Alaska, and Hawaii. (D) Data withheld to avoid disclosing figures for individual companies. Table 7. QUANTITY OF PRIMARY PRODUCTION OF SPECIFIED INDUSTRIAL GASES: 1993 AND 1992 (Production in million cubic feet, except where otherwise noted) Product code Product description Year Total First Quarter Second Quarter Third Quarter Fourth Quarter 28132 00 Acetylene 1)...................................... 1993 r/5,262 r/1,266 r/1,302 r/1,330 r/1,364 1992 5,306 1,335 1,283 1,324 1,364 28132 11 Produced for compression, including cylinder and pipeline........................... 1993 r/852 r/225 r/210 r/187 r/230 1992 734 198 185 173 178 28132 21 Produced for pipeline shipment (excluding that shipped to be compressed) and for consumption in this plant............... 1993 4,410 (S) (S) (S) (S) 1992 4,572 (S) (S) (S) (S) Carbon dioxide: 2) 28133 01 Gas (include amounts produced and liquefied) (short tons)........................ 1993 6,813,551 (S) (S) (S) (S) 1992 6,936,515 (S) (S) (S) (S) 28133 02 Liquid (include amounts produced and used to make dry ice) (short tons)............. 1993 r/5,596,407 1992 r/5,541,967 (S) (S) (S) (S) 28133 31 Solid (dry ice) (short tons)................... 1993 r/292,662 r/65,584 r/74,419 r/83,344 r/69,315 1992 261,975 62,386 64,261 67,164 68,164 Argon, high purity: 28137 15 Produced for cylinder and bulk delivery and pipeline shipments, and for consumption in this plant....................... 1993 15,818 3,838 3,847 3,951 4,182 1992 13,729 3,211 3,358 3,537 3,623 Hydrogen 3)....................................... 1993 r/221,212 r/52,454 r/50,848 r/56,316 r/61,594 1992 162,213 38,389 38,983 42,122 42,719 Gas produced for: 28137 22 Merchant shipment AND 28137 32 Pipeline and on-site use........................ 1993 4 r/113,993 4 r/25,871 4 r/24,533 4 r/29,091 4 r/34,498 1992 4/84,850 4/19,396 4/20,424 4/22,404 4/22,626 28137 42 Consumption in this plant....................... 1993 r/107,219 r/26,583 r/26,315 r/27,225 r/27,096 1992 77,363 18,993 18,559 19,718 20,093 Liquid produced for: 28137 52 Merchant shipment AND 28137 62 Other shipments or uses......................... 1993 (4) (4) (4) (4) (4) 1992 (4) (4) (4) (4) (4) 28135 00 Nitrogen 5)....................................... 1993 r/791,507 r/196,751 r/196,166 r/198,346 r/200,244 1992 818,499 198,509 202,792 208,039 209,159 Gas produced by: 28135 22 Cryogenic on-site and pipeline AND 28135 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies............................. 1993 r/531,908 r/135,055 r/131,973 r/132,204 r/132,676 1992 571,203 138,454 141,141 145,683 145,925 Captive uses for consumption in this plant (user owned): 28135 24 Cryogenic processes AND 28135 26 Noncryogenic processes (psa,vpsa, membrane etc.)................................. 1993 6 r22,916 6 r/4,926 6 r/5,366 6 r/5,710 6 r/6,914 1992 6 r24,085 6 r/6,523 6 r/6,133 6 r/5,713 6 r/5,716 Liquid produced for: 28135 12 Merchant shipment............................... 1993 223,746 53,593 55,593 57,158 57,402 1992 210,746 50,230 52,566 53,644 54,306 28135 32 Consumption in this plant....................... 1993 (6) (6) (6) (6) (6) 1992 (6) (6) (6) (6) (6) 28135 34 Other shipments or uses......................... 1993 r/12,937 r/2,977 r/3,102 r/3,433 r/3,425 1992 12,465 3,351 2,976 2,954 r/3,184 28136 00 Oxygen............................................ 1993 546,939 131,138 131,494 141,114 143,193 1992 525,234 124,535 129,119 135,525 136,055 Gas produced by: 28136 22 Cryogenic on-site and pipeline AND 28136 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies............................. 1993 407,776 97,384 99,456 105,144 105,792 1992 389,273 90,793 95,224 101,626 101,630 Captive uses for consumption in this plant (user owned): 28136 24 Cryogenic processes AND 28136 26 Noncryogenic processes (psa,vpsa, membrane etc.)................................. 1993 7 r/25,286 7 r/ (S) 7 r/ (S) 7 r/6,601 7 r/6,583 1992 7/26,351 7/6,469 7/6,678 7/6,611 7/6,593 Liquid produced for: 28136 12 Merchant shipment............................... 1993 104,444 25,277 24,786 26,933 27,448 1992 101,420 25,242 25,267 25,039 25,872 28136 32 Consumption in this plant....................... 1993 (7) (7) (7) (7) (7) 1992 (7) (7) (7) (7) (7) 28136 34 Other shipments or uses......................... 1993 r/9,433 r/2,209 r/2,265 r/2,241 r/2,718 1992 8,190 2,033 1,951 2,247 1,959 r/Revised by 5 percent or more from previously published figures. (S) Suppressed. Data did not meet the publication standards of the Bureau of the Census. 1/Excludes information from railroad ships, shipyards, welding shops, and small establishments using portable generators. 2/Excludes quantities produced and consumed in plants manufacturing soda ash and urea. 3/Excludes amounts vented, used as fuel, etc., and amounts produced and consumed in the manufacturing of synthetic ammonia and methanol, but includes an unspecified amount produced for sale or interplant transfer to plants consuming this gas in the production of ammonia. Also excludes amounts produced by the ammonia dissociation process (cracking of ammonia). Also excludes amounts produced in petroleum refineries for captive use. 4/Product codes 28137 52 and 28137 62 have been combined with product codes 28137 22 and 28137 32 to avoid disclosing figures for individual companies. 5/Excludes amounts produced and consumed in the manufacturing of synthetic ammonia derivatives. 6/Product code 28315 32 has been combined with product codes 28135 24 and 28135 26 to avoid disclosing figures for individual companies. 7/Product code 28136 32 has been combined with product codes 28136 24 and 28136 26 to avoid disclosing figures for individual companies. Table 8. PRODUCTION, EXPORTS, IMPORTS, AND APPARENT CONSUMPTION OF INDUSTRIAL GASES: 1993 AND 1992 Percent Percent Exports exports to imports Product Product description Unit of Manufacturers' of domestic manufacturers' Imports for Apparent to apparent code measure Year production merchandise/1 production consumption/2 consumption\3 consumption 28133 01 28133 02 Carbon dioxide (gas, liquid, and solid)..Metric tons..... 1993 11,523,997 109,271 0.9 26,349 11,441,075 0.2 28133 31 1992 11,555,594 208,005 1.8 21,999 11,369,588 0.2 28137 15 Argon (high purity)......................Mil. cu. meters. 1993 443 107 24.2 23 359 6.4 1992 384 81 21.1 21 324 6.5 28137 22 28137 32 28137 42 Hydrogen.................................Mil. cu. meters. 1993 6,194 122 2 114 6,186 1.8 28137 52 1992 4,542 43 0.9 120 4,619 2.6 28137 62 28135 00 Nitrogen.................................Mil. cu. meters. 1993 22,162 49 0.2 99 22,212 0.4 1992 22,918 47 0.2 57 22,928 0.2 28136 00 Oxygen...................................Mil. cu. meters. 1993 15,314 59 0.4 9 15,264 0.1 1992 14,707 56 0.4 6 14,657 - Note: For comparison of Standard Industrial Classification (SIC)-based product codes, Schedule B export numbers, and HTSUSA import numbers, see table 9. - Less than one-tenth of one percent. 1/Source: Bureau of the Census report EM 545, U.S. Exports. 2/Source: Bureau of the Census report IM 145, U.S. Imports for Consumption. 3/Apparent consumption is derived by subtracting exports from the total of production plus imports. Table 9. COMPARISON OF STANDARD INDUSTRIAL CLASSIFICATION-BASED PRODUCT CODES, SCHEDULE B EXPORT NUMBERS, AND HTSUSA IMPORT NUMBERS: 1993 Product Export Import code Product description number/1 number/2 28133 01 28133 02 Carbon dioxide (gas, liquid, and solid). 2811.21.0000 2811.21.0000 28133 31 28137 15 Argon................................... 2804.21.0000 2804.21.0000 28137 22 28137 32 28137 42 Hydrogen................................ 2804.10.0000 2804.10.0000 28137 52 28137 62 28135 00 Nitrogen................................ 2804.30.0000 2804.30.0000 28136 00 Oxygen.................................. 2804.40.0000 2804.40.0000 1/Source: 1993 edition, Harmonized System-Based Schedule B, Statistical Classification of Domestic and Foreign Commodities Exported from the United States. 2/Source: Harmonized Tariff Schedule of the United States, Annotated (1993). ties produced and consumed in plants manufacturing s