"c VAR 0511 01256 EXPLOSV 3R 920-953 MD= 1E-37 " "c REF 0511 LOC 771 WIDTH 9 DK 13 COL 17-25 " "c EXP DEC= 1 " "c " "c EXPLOSIVES, SHIPMENTS " "c --------------------- " "c " "c NBER SERIES: 01256 " "c AREA COVERED: U.S. " "c UNITS: MILLIONS OF POUNDS " "c ANNUAL COVERAGE: NONE " "c QUARTERLY COVERAGE: NONE " "c MONTHLY COVERAGE: 01/1920-06/1953 " "c SEASONAL ADJUSTMENT: NONE " "c SOURCE: DATA WERE COMPILED BY THE BUREAU OF MINES " "c (DEPARTMENT OF COMMERCE) UNTIL JUNE 1933 AND SUBSEQUENTLY BY " "c THE INSTITUTE OF MAKERS OF EXPLOSIVES. 1920-1925 DATA ARE " "c NOT ENTIRELY COMPARABLE TO LATER FIGURES BECAUSE OF VARYING " "c COVERAGE. DATA COMPRISE BLACK POWDER, PERMISSIBLES, AND " "c OTHER HIGH EXPLOSIVES BUT NOT MANUFACTURES OF AMMUNITION AND " "c FIREWORKS NOR PRODUCTION OF NITROGLYCERINE UNLESS USED IN " "c THE MANUFACTURE OF EXPLOSIVES. BEGINNING JULY 1948, DATA " "c WERE DERIVED BY COMBINING TWO SERIES IN SURVEY OF CURRENT " "c BUSINESS: "BLASTING POWDER" AND "HIGH EXPLOSIVES." " "c " "c NOTES: FOR MORE INFORMATION, SEE SURVEY OF CURRENT " "c BUSINESS, JANUARY 1934. " "c " "c CHECKED MANUALLY; NO CORRECTIONS NECESSARY. " "c " "c ............................................................... "