MA28C-INDUSTRIAL GASES 1992 ANNUAL REPORT MA28C(92)-1 Issued August 1993 Contact person: David J. Gromos, (301) 763-7809. For survey methodology and definitions of terms, see the 1991 publication, MA28C(91)-1, issued August 1992. Printed data tables will be available at the end of each data year through an annual compendium publication, which will include information on all Current Industrial Reports. SUMMARY OF FINDINGS Value of shipments of industrial gases in 1992 totaled $ 3,056.2 million, a 3.5% increase over the $ 2,952.8 million in 1991. Production of hydrogen increased 5.9%, while production of oxygen was up 11.8%. The quantity of shipments for nitrogen increased 7.7%. Quantity of liquid carbon dioxide shipped increased 4.1%, while quantity of carbon dioxide gas decreased 14.5%. Table 1. PRODUCTION AND SHIPMENTS OF SELECTED INDUSTRIAL GASES: 1989 TO 1992 (Value in millions of dollars) Shipments Product Unit of code Product and year measure Production Quantity Value 28132 00 Acetylene: 1992.................... ..Billion cu. ft. 5.3 2.9 137.9 1991.................... .........do...... 5.5 r/2.9 r/135.7 1990.................... .........do...... 5.5 3.7 153.9 1989.................... .........do...... 5.4 3.3 135.3 28133 00 Carbon dioxide: Gas: 1992.................. .1,000 short tons 6,916.9 6,538.5 58.2 1991.................. .........do...... 7,949.4 r/7,644.7 r/76.3 1990.................. .........do...... 7,890.4 7,890.4 87.8 1989.................. .........do...... (S) (S) (S) Liquid: 1992.................. .........do...... 5,179.1 5,052.1 274.8 1991.................. .........do...... 5,001.2 4,853.2 r/267.4 1990.................. .........do...... 4,925.2 4,877.2 262.2 1989.................. .........do...... 5,037.4 4,933.6 251.4 Solid (dry ice): 1992.................. .........do....do 260.4 259.6 26.9 1991.................. .........do....do 267.2 266.6 30.6 1990.................. .........do....do 260.8 260.7 30.0 1989.................. .........do....do 301.6 301.3 35.1 28135 00 Nitrogen: 1992.................... ..Billion cu. ft. 835.2 811.3 983.6 1991.................... .........do...... 769.9 753.1 r/953.7 1990.................... .........do...... 749.5 723.5 791.1 1989.................... .........do...... 744.1 705.9 766.2 28136 00 Oxygen: 1992.................... .........do...... 525.0 498.7 802.9 1991.................... .........do...... 469.7 446.6 r/767.0 1990.................... .........do...... 462.3 436.2 662.9 1989.................... .........do...... 460.7 439.1 644.6 28137 pt. Hydrogen: 1992.................... .........do...... 161.7 84.0 249.1 1991.................... .........do...... 152.7 79.9 226.8 1990.................... .........do...... 147.8 72.1 226.4 1989.................... .........do...... 145.5 72.9 217.2 r/Revised by 5 percent or more from previously published figures. pt. Part. (S) Supressed. Data did not meet the publication standards of the Bureau of the Census. Table 2. QUANTITY OF PRIMARY PRODUCTION OF SPECIFIED INDUSTRIAL GASES: 1992 AND 1991 1992 1991 Shipments Shipments Product Unit of code Product description measure Production Quantity Value Production Quantity Value 2813- -- Indusrial gases..................................... ......(X). (X) (X) 3,056,224 (X) (X) r/2,952,793 28132 00 Acetylene 1)........................................... .Mil. cu. 5,276 2,920 137,863 5,524 r/2,935 r/135,673 28132 11 Produced for compression, including cylinder and pipeline................................ ......do.. 704 703 70,435 801 790 71,453 28132 21 Produced for pipeline shipment (excluding that shipped to be compressed) and for consumption in this plant.................... ......do.. 4,572 2,217 67,428 4,723 r/2,145 r/64,220 28133 00 Carbon dioxide 2)...................................... .Short ton 12,356,351 11,850,224 359,829 13,217,766 12,764,444 374,284 28133 01 Gas (include amounts produced and liquefied)........................................... ......do.. 6,916,876 6,538,510 58,181 7,949,350 r/7,644,729 r/76,272 28133 02 Liquid (include amounts produced and used to make dry ice)................................ ......do.. 5,179,100 5,052,094 274,753 5,001,246 4,853,155 r/267,392 28133 31 Solid (dry ice)...................................... ......do.. 260,375 259,620 26,895 267,170 266,560 30,620 28135 00 Nitrogen 3)............................................ .Mil. cu. 835,217 811,257 983,557 769,896 753,055 r/953,723 Gas produced by: 28135 22 Cryogenic on-site and pipeline....................AND ......do.. 28135 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies.......... ......do.. 590,050 589,121 416,876 532,837 532,780 414,919 Captive uses for consumption in this plant: 28135 24 Cryogenic processes..............................AND ......do.. 28135 26 Noncryogenic processes (psa, vpsa, membranes, etc.). ......do.. 4/22,439 (X) (X) 4 r/16,032 (X) (X) Liquid produced for: 28135 12 Merchant shipment.................................... ......do.. 210,263 209,774 525,489 r/208,397 r/207,967 r/506,975 28135 32 Consumption in this plant............................ ......do.. (4) (X) (X) (4) (X) (X) 28135 34 Supplemental shipments or uses....................... ......do.. 12,465 12,362 41,192 12,630 12,308 r/31,829 28136 00 Oxygen................................................. ......do.. 524,994 498,703 802,921 469,748 446,577 r/767,014 Gas produced by: 28136 22 Cryogenic on-site and pipeline....................AND ......do.. 28136 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies.......... ......do.. 389,273 389,290 503,589 343,476 343,016 490,734 Captive uses for consumption in this plant: 28136 24 Cryogenic processes..............................AND ......do.. 28136 26 Noncryogenic processes (psa, vpsa, membranes, etc.). ......do.. 5/26,312 (X) (X) 5 r/22,647 (X) (X) Liquid produced for: 28136 12 Merchant shipment.................................... ......do.. 101,219 101,225 272,610 96,353 96,324 257,438 28136 32 Consumption in this plant............................ ......do.. (5) (X) (X) (5) (X) (X) 28136 34 Supplemental shipments or uses....................... ......do.. 8,190 8,188 26,722 7,272 7,237 r/18,842 28137 00 Elemental gases and otherindusrial gases n.e.c......... ......do.. (X) (X) 731,215 (X) (X) 683,135 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.. 13,922 13,718 261,124 13,338 13,426 246,382 Helium 6)............................................. ......do.. 3,403 3,403 (X) 3,176 3,176 (X) Hydrogen 7)........................................... ......do.. 161,728 84,049 249,076 152,704 79,893 226,760 Gas produced for: 28137 22 Merchant shipment................................AND ......do.. 28137 32 Pipeline and on-site use............................ ......do.. 8/84,365 84,049 249,076 8/80,202 79,893 226,760 28137 42 Consumption in this plant........................... ......do.. 77,363 (X) (X) 72,502 (X) (X) Liquid produced for: 28137 52 Merchant shipment................................AND ......do.. 28137 62 Supplemental shipments or uses...................... ......do.. (8) (8) (8) (8) (8) (8) 28137 90 Other elemental gases................................. ......(X). (X) (X) 77,933 (X) (X) 75,940 28137 71 Nitrous oxide......................................AND ......(X). 28137 98 Other compressed and liquefied gases 9)............... ......(X). (X) (X) 121,012 (X) (X) 119,476 28130 00 Industrial gases n.s.k................................. ......(X). (X) (X) 40,839 (X) (X) 38,964 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 proccess (cracking of ammonia). Also excludes amouunts 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 Commisssion annual report, SYNTHETIC ORGANIC CHEMICALS. Also, excludes sulfur dioxide and chlorine data, which are shown in Current Industrial Reports Series, MA28A(92)-1, INORGANIC CHEMICALS. Table 3. PRODUCTION AND SHIPMENTS OF ACETYLENE, BY GEOGRAPHIC AREA: 1992 AND 1991 1992 1991 Geographic area Shipments Shipments Production Quantity Value Production Quantity Value Total............................... 5,276 2,920 137,863 5,524 r/2,935 r/135,673 Northeast Region........................ 67 70 4,785 182 182 11,986 North Central Region.................... 220 218 19,863 236 237 20,750 East North Central.................... 155 152 13,714 187 188 16,459 West North Central.................... 65 66 6,149 r/49 r/49 r/4,291 South Region............................ 4,862 2,503 94,568 4,957 2,367 87,244 South Atlantic and East South Central. 614 612 36,737 r/675 r/667 r/38,537 West South Central.................... 4,248 1,891 57,831 4,282 r/1,700 r/48,707 West Region............................. 127 129 18,647 149 149 15,693 Mountain.............................. 20 19 2,545 22 22 2,228 Pacific............................... 107 110 16,102 r/127 r/127 r/13,465 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: 1992 AND 1991 Liquid Solid (dry ice) Geographic area Shipments Shipments Production Quantity Value Production Quantity Value 1992 Total................................. 5,179,100 5,052,094 274,753 260,375 259,620 26,895 Northeast Region........................ (1) (1) (1) (1) (1) (1) North Central Region.................... 1,385,740 1,319,461 65,536 166,614 165,357 15,320 East North Central.................... 1/861,966 1/823,279 1/38,621 1/84,151 1/84,163 1/8,943 West North Central.................... 523,774 496,182 26,915 82,463 81,194 6,377 South Region............................ 2,692,250 2,617,164 135,790 49,556 50,058 5,960 South Atlantic and East South Central. 1,662,429 1,654,221 91,872 (D) (D) (D) West South Central.................... 1,029,821 962,943 43,918 (D) (D) (D) West Region............................. 1,101,110 1,115,469 73,427 44,205 44,205 5,615 Mountain.............................. 347,055 327,957 17,427 (D) (D) (D) Pacific............................... 754,055 787,512 56,000 (D) (D) (D) 1991 Total................................. 5,001,246 4,853,155 r/267,392 267,170 266,560 30,620 Northeast Region........................ (1) (1) (1) (1) (1) (1) North Central Region.................... 1,316,821 1,251,833 62,632 169,381 169,081 17,551 East North Central.................... 1/843,948 1/804,979 1/38,771 1/95,086 1/95,086 1 r/11,433 West North Central.................... r/472,873 r/446,854 23,861 74,295 73,995 6,118 South Region............................ 2,610,896 2,561,940 138,469 r/50,660 r/50,350 r/7,013 South Atlantic and East South Central. 1,602,180 1,598,777 90,883 (D) (D) (D) West South Central.................... r/1,008,716 r/963,163 47,586 (D) (D) (D) West Region............................. 1,073,529 1,039,382 66,291 47,129 47,129 6,056 Mountain.............................. r/344,962 r/325,931 17,091 (D) (D) (D) Pacific............................... r/728,567 r/713,451 49,200 (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: 1992 AND 1991 ARGON HYDROGEN 1992 1991 1992 1991 Geographic area Shipments Shipments Shipments Shipments Production Quantity Value Production Quantity Value Production Quantity Value Production Quantity Value Total....................... (D) (D) (D) (D) (D) (D) 161,728 84,049 249,076 152,704 79,893 226,760 Northeast Region................. 1,185 1,189 21,116 1,075 1,096 18,736 9,762 8,358 27,946 9,908 8,805 32,584 North Central Region............. (D) (D) (D) (D) (D) (D) 6,097 2,530 7,474 5,748 1,942 4,762 East North Central Division.... 5,092 5,093 103,573 4,712 4,744 98,802 (D) (D) (D) (D) (D) (D) West North Central Division.... (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) South Region..................... 7,764 7,558 135,452 7,060 7,093 r/118,168 133,983 (D) (D) 124,592 (D) (D) South Altantic Division........ 1,512 1,512 31,011 1,359 1,376 28,656 8,667 2,356 (D) 8,400 2,343 (D) East South Central Division.... 1,323 1,116 25,124 984 991 17,515 4,010 (D) (D) 3,238 (D) (D) West South Central Division.... 4,929 4,930 79,317 4,717 4,726 71,997 121,306 67,646 184,806 112,954 63,979 164,167 West Region...................... 1,171 1,167 23,564 1,077 1,080 21,496 11,886 (D) (D) r/12,456 (D) (D) See note at end of Table 6. r/Revised by 5 percent or more from previously published figures. Table 6. PRODUCTION AND SHIPMENTS OF LIQUID NITROGEN AND OXYGEN PRODUCED FOR MERCHANT SHIPMENT, BY GEOGRAPHIC AREA: 1992 AND 1991 NITROGEN OXYGEN 1992 1991 1992 1991 Geographic area Shipments Shipments Shipments Shipments Production Quantity Value Production Quantity Value Production Quantity Value Production Quantity Value Total.................... 210,263 209,774 525,489 208,397 r/207,967 r/506,975 101,219 101,225 272,610 96,353 96,324 257,438 Northeast Region.............. 38,099 37,489 80,027 37,245 36,933 86,051 15,937 15,956 37,201 r/14,384 r/13,872 r/32,609 North Central Region.......... 60,313 60,415 145,758 55,975 56,062 127,457 27,596 27,617 68,985 r/26,615 r/26,954 r/67,635 East North Central Division. (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) West North Central Division. (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) (D) South Region.................. 70,537 70,570 183,292 73,051 73,008 181,883 42,692 42,656 120,083 39,450 39,538 110,689 South Altantic Division..... 28,660 28,663 73,916 30,727 30,712 75,832 20,509 20,523 54,289 18,481 18,475 49,818 East South Central Division. 12,842 12,809 32,132 11,865 11,807 27,856 10,241 10,201 26,816 9,065 9,089 23,396 West South Central Division. 29,035 29,098 77,244 30,459 30,489 78,195 11,942 11,932 38,978 r/11,904 r/11,974 r/37,475 West Region................... 41,314 41,300 116,412 42,126 41,964 111,584 14,994 14,996 46,341 r/15,904 r/15,960 46,505 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: Deleware, 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 Navada. Pacific: Washington, Oregon, California, Alaska, and Hawaii. r/Revised by 5 percent or more from previously published figures. Table 7. QUANTITY OF PRIMARY PRODUCTION OF SPECIFIED INDUSTRIAL GASES: 1992 AND 1991 (Production in million cubic feet, except where otherwise noted) Product First Second Third Fourth code Product description Year Total quarter quarter quarter quarter 28132 00 Acetylene 1)............................... 1992 5,276 1,327 1,276 1,317 1,356 1991 5,524 1,410 1,361 1,361 1,392 28132 11 Produced for compression, including cylinder and pipeline.................... 1992 r/704 r/190 r/177 r/166 r/171 1991 801 206 208 189 198 28132 21 Produced for pipeline shipment (excluding that shipped to be compressed) and for consumption in this plant........ 1992 4,572 (S) (S) (S) (S) 1991 4,723 (S) (S) (S) (S) Carbon dioxide: 2) 28133 01 Gas (include amounts produced and liquefied) (short tons)................. 1992 6,916,876 (S) (S) (S) (S) 1991 7,949,350 (S) (S) (S) (S) 28133 02 Liquid (include amounts produced and used to make dry ice) (short tons)...... 1992 5,179,100 (S) (S) (S) (S) 1991 5,001,246 1,197,201 1,279,023 1,250,750 1,274,272 28133 31 Solid (dry ice) (short tons)............ 1992 260,375 62,004 63,869 66,754 67,748 1991 267,170 63,479 67,683 70,253 65,755 Argon, high purity: 28137 15 Produced for cylinder and bulk delivery and pipeline shipments, and for consumption in this plant................ 1992 13,922 3,256 3,405 3,587 3,674 1991 13,338 3,373 3,335 3,258 3,372 Hydrogen 3)................................ 1992 161,728 38,278 38,906 41,994 42,550 1991 152,704 37,288 36,983 39,341 39,092 Gas produced for: 28137 22 Merchant shipment.....................AND 28137 32 Pipeline and on-site use................. 1992 4 r/84,365 4 r/19,285 4 r/20,307 4 r/22,276 4 r/22,497 1991 4/80,202 4/19,758 4/19,838 4/20,521 4/20,085 28137 42 Consumption in this plant................ 1992 r/77,363 r/18,993 r/18,599 r/19,718 r/20,053 1991 72,502 17,530 17,145 18,820 19,007 Liquid produced for: 28137 52 Merchant shipment........................ 1992 (4) (4) (4) (4) (4) 1991 (4) (4) (4) (4) (4) 28137 62 Other shipments or uses.................. 1992 (4) (4) (4) (4) (4) 1991 (4) (4) (4) (4) (4) 28135 00 Nitrogen 5)................................ 1992 835,217 202,564 206,934 212,288 213,431 1991 769,896 189,750 199,769 194,976 185,401 Gas produced by: 28135 22 Cryogenic on-site and pipeline........AND 28135 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies...................... 1992 590,050 143,022 145,798 150,490 150,740 1991 532,837 131,700 141,003 134,749 125,385 Captive uses for consumption in this plant (user owned): 28135 24 Cryogenic processes..................AND 28135 26 Noncryogenic processes (psa,vpsa, membrane etc.).......................... 1992 6 r/22,439 6 r/6,077 6 r/5,714 6 r/5,323 6 r/5,325 1991 6 r/16,032 6 r/4,527 6 r/3,802 6 r/3,777 6 r/3,926 Liquid produced for: 28135 12 Merchant shipment........................ 1992 210,263 50,114 52,446 53,521 54,182 1991 r/208,397 r/50,396 r/52,006 r/52,995 r/53,000 28135 32 Consumption in this plant................ 1992 (6) (6) (6) (6) (6) 1991 (6) (6) (6) (6) (6) 28135 34 Other shipments or uses.................. 1992 r/12,465 r/3,351 r/2,976 r/2,954 r/3,184 1991 r/12,630 r/3,127 r/2,958 r/3,455 r/3,090 28136 00 Oxygen..................................... 1992 524,994 124,478 129,060 135,463 135,993 1991 469,748 116,966 113,551 119,168 120,063 Gas produced by: 28136 22 Cryogenic on-site and pipeline........AND 28136 23 Noncryogenic processes (psa, vpsa, membranes, etc.) by industrial gas producing companies...................... 1992 389,273 90,793 95,224 101,626 101,630 1991 343,476 85,068 81,278 87,904 89,226 Captive uses for consumption in this plant (user owned): 28136 24 Cryogenic processes..................AND 28136 26 Noncryogenic processes (psa,vpsa, membrane etc.).......................... 1992 7 r/26,312 7 r/6,460 7 r/6,668 7 r/6,601 7 r/6,583 1991 7 r/22,647 7 r/5,583 7 r/6,553 7 r/5,431 7 r/5,080 Liquid produced for: 28136 12 Merchant shipment........................ 1992 101,219 25,192 25,217 24,989 25,821 1991 96,353 24,530 23,906 23,992 23,925 28136 32 Consumption in this plant................ 1992 (7) (7) (7) (7) (7) 1991 (7) (7) (7) (7) (7) 28136 34 Other shipments or uses.................. 1992 8,190 2,033 1,951 2,247 1,959 1991 7,272 1,785 1,814 1,841 1,832 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 methynol, 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: 1992 Percent exports Percent Manu- Exports to manu- imports Product Product description Unit of facturers' of domestic facturers' Imports for Apparent to apparent code measure Year production merchandise production consumption consumption 3/ consumption 28133 01 28133 02 Carbon dioxide (gas, liquid, 28133 31 and solid).................... .....Metric tons.. ...1992. 11,202,494 208,005 1.9 21,999 11,016,488 0.2 ...1991. 11,983,469 30,942 0.3 45,199 11,997,726 0.4 28137 15 Argon.......................... ....Mil. cu. meter ...1992. 390 81 20.8 21 330 6.4 ...1991. 374 72 19.3 22 324 6.8 28137 22 28137 32 28137 42 Hydrogen....................... ....Mil. cu. meter ...1992. 4,529 43 0.9 120 4,606 2.6 28137 52 ...1991. 4,276 54 1.3 107 4,329 2.5 28137 62 28135 00 Nitrogen....................... ....Mil. cu. meter ...1992. 23,389 47 0.2 57 23,399 0.2 ...1991. 21,560 56 0.3 56 21,560 0.3 28136 00 Oxygen......................... ....Mil. cu. meter ...1992. 14,702 56 0.4 6 14,652 - ...1991. 13,154 51 0.4 6 13,109 - 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 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: 1992 Product Export Import code Product description number 1/ number 2/ 28133 01 28133 02 Carbon dioxide (gas, liquid, 28133 31 and solid)......................... 2811.21.0000 2811.21.0000 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: 1992 edition, Harmonized System-Based Schedule B, Statistical Classification of Domestic and Foreign Commodities Exported from the United States. 2/Source: Harmonized Tariff Sschedule of the United States, Annotated (1992). 1/Excludes i