"c           VAR 0781      01138 COP PRO 3R 892-928               MD= 1E-37   "
"c           REF 0781         LOC 3201 WIDTH  9             DK  51 COL 53-61  "
"c                                                 EXP DEC=  1                "
"c                                                                            "
"c              COPPER PRODUCTION                                             "
"c              -----------------                                             "
"c                                                                            "
"c              NBER SERIES:  01138                                           "
"c              AREA COVERED:  U.S.                                           "
"c              UNITS:  THOUSANDS OF SHORT TONS                               "
"c              ANNUAL COVERAGE:  NONE                                        "
"c              QUARTERLY COVERAGE:  NONE                                     "
"c              MONTHLY COVERAGE:  07/1892-12/1902; 01/1913-12/1928           "
"c              SEASONAL ADJUSTMENT:  NONE                                    "
"c              SOURCE:  U.S. GEOLOGICAL SURVEY, MINERAL RESOURCES (CHECKED   "
"c              WITH D. HOUSTON AND COMPANY, COPPER MANUAL, 1904, VOL. III,   "
"c              PP. 82-85).                                                   "
"c                                                                            "
"c              NOTES:  DATA ORIGINALLY GIVEN IN LONG TONS WERE CONVERTED TO  "
"c              SHORT TONS BY NBER.                                           "
"c                                                                            "
"c              CHECKED MANUALLY; CORRECTED 1/4/94.                           "
"c                                                                            "
"c           ...............................................................  "