| NC historical mineral production history | ||||||||||
| Year | Crushed stone (thousand metric tons) | Crushed stone - Value (thousand dollars) | Construction sand and gravel (thousand metric tons) | Construction sand and gravel - Value (thousand dollars) | Industrial sand and gravel (thousand metic tons) | Industrial sand and gravel - Value (thousand dollars) | Clay (thousand metric tons) | Clay - Value (thousand dollars) | ||
| 1971 | 28,047 | $58,026 | 12,918 | $14,690 | 3,177 | $3,802 | ||||
| 1972 | 29,299 | $62,741 | 11,633 | $13,812 | 3,504 | $4,473 | ||||
| 1973 | 35,182 | $80,065 | 14,422 | $19,327 | 628 | $2,104 | 3,728 | $5,057 | ||
| 1974 | 31,483 | $71,583 | 11,597 | $20,844 | 952 | $3,869 | 3,104 | $4,648 | ||
| 1975 | 25,638 | $65,825 | 7,411 | $15,610 | 489 | $2,691 | 2,342 | $4,094 | ||
| 1976 | 27,977 | $78,632 | 7,538 | $14,344 | 671 | $3,943 | 2,494 | $4,677 | ||
| 1977 | 29,765 | $87,254 | 8,013 | $17,267 | 777 | $4,003 | 2,741 | $4,989 | ||
| 1978 | 34,189 | $108,867 | 9,484 | $22,246 | 900 | $5,834 | 3,213 | $9,067 | ||
| 1979 | 36,164 | $125,319 | 8,740 | $21,618 | 1,423 | $8,155 | 3,001 | $8,385 | ||
| 1980 | 31,537 | $125,019 | 7,110 | $20,910 | 1,335 | $7,825 | 2,587 | $7,307 | ||
| 1981 | 26,157 | $117,092 | 5,710 | $18,330 | 1,121 | $10,440 | 1,914 | $6,838 | ||
| 1982 | 24,948 | $117,600 | 4,716 | $15,395 | 650 | $4,878 | 1,427 | $5,243 | ||
| 1983 | 30,567 | $145,001 | 5,080 | $16,900 | 967 | $11,689 | 1,876 | $6,680 | ||
| 1984 | 34,564 | $168,000 | 5,726 | $18,159 | 1,051 | $12,864 | 2,068 | $8,986 | ||
| 1985 | 37,894 | $194,818 | 5,534 | $19,500 | 1,174 | $13,086 | 2,369 | $10,476 | ||
| 1986 | 39,463 | $206,500 | 6,843 | $23,127 | 1,328 | $16,656 | 2,364 | $10,970 | ||
| 1987 | 44,313 | $237,181 | 7,802 | $30,100 | 1,074 | $15,329 | 2,878 | $15,282 | ||
| 1988 | 45,813 | $250,000 | 10,048 | $38,459 | 1,130 | $15,953 | 2,832 | $16,349 | ||
| 1989 | 46,737 | $257,976 | 10,160 | $43,700 | 1,476 | $19,902 | 2,204 | $15,528 | ||
| 1990 | 47,990 | $276,200 | 10,644 | $44,872 | 1,068 | $15,338 | 2,179 | $9,355 | ||
| 1991 | 42,188 | $243,920 | 8,979 | $35,000 | 1,064 | $15,565 | 2,063 | $9,015 | ||
| 1992 | 44,089 | $262,400 | 9,283 | $42,717 | 1,088 | $17,533 | 2,120 | $9,775 | ||
| 1993 | 47,787 | $297,657 | 11,100 | $53,800 | 1,344 | $18,597 | 2,381 | $11,165 | ||
| 1994 | 52,000 | $338,000 | 12,000 | $59,400 | W | W | 2,200 | $11,100 | ||
| 1995 | 57,200 | $380,000 | 10,700 | $50,300 | 1,460 | $16,100 | 2,250 | $10,100 | ||
| 1996 | 57,000 | $388,000 | 11,300 | $58,400 | 1,640 | $26,900 | 2,400 | $11,100 | ||
| 1997 | 66,000 | $460,000 | 12,800 | $66,000 | 1,550 | $23,600 | 2,550 | $23,700 | ||
| 1998 | 65,000 | $507,000 | 10,400 | $59,500 | 1,630 | $27,200 | 2,510 | $12,100 | ||
| 1999 | 71,400 | $505,000 | 9,960 | $53,900 | 1,440 | $24,800 | 2,390 | $11,300 | ||
| 2000 | 70,000 | $491,000 | 12,300 | $69,000 | 1,670 | $27,500 | 2,430 | $18,700 | ||
| Thousands of metric tons | ||||||||||
| Crushed stone (thousand metric tons) | Construction sand and gravel (thousand metric tons) | Industrial sand and gravel (thousand metic tons) | Clay (thousand metric tons) | |||||||
| 1971 | 28,047 | 12,918 | 0 | 3,177 | ||||||
| 1972 | 29,299 | 11,633 | 0 | 3,504 | ||||||
| 1973 | 35,182 | 14,422 | 628 | 3,728 | ||||||
| 1974 | 31,483 | 11,597 | 952 | 3,104 | ||||||
| 1975 | 25,638 | 7,411 | 489 | 2,342 | ||||||
| 1976 | 27,977 | 7,538 | 671 | 2,494 | ||||||
| 1977 | 29,765 | 8,013 | 777 | 2,741 | ||||||
| 1978 | 34,189 | 9,484 | 900 | 3,213 | ||||||
| 1979 | 36,164 | 8,740 | 1,423 | 3,001 | ||||||
| 1980 | 31,537 | 7,110 | 1,335 | 2,587 | ||||||
| 1981 | 26,157 | 5,710 | 1,121 | 1,914 | ||||||
| 1982 | 24,948 | 4,716 | 650 | 1,427 | ||||||
| 1983 | 30,567 | 5,080 | 967 | 1,876 | ||||||
| 1984 | 34,564 | 5,726 | 1,051 | 2,068 | ||||||
| 1985 | 37,894 | 5,534 | 1,174 | 2,369 | ||||||
| 1986 | 39,463 | 6,843 | 1,328 | 2,364 | ||||||
| 1987 | 44,313 | 7,802 | 1,074 | 2,878 | ||||||
| 1988 | 45,813 | 10,048 | 1,130 | 2,832 | ||||||
| 1989 | 46,737 | 10,160 | 1,476 | 2,204 | ||||||
| 1990 | 47,990 | 10,644 | 1,068 | 2,179 | ||||||
| 1991 | 42,188 | 8,979 | 1,064 | 2,063 | ||||||
| 1992 | 44,089 | 9,283 | 1,088 | 2,120 | ||||||
| 1993 | 47,787 | 11,100 | 1,344 | 2,381 | ||||||
| 1994 | 52,000 | 12,000 | 0 | 2,200 | ||||||
| 1995 | 57,200 | 10,700 | 1,460 | 2,250 | ||||||
| 1996 | 57,000 | 11,300 | 1,640 | 2,400 | ||||||
| 1997 | 66,000 | 12,800 | 1,550 | 2,550 | ||||||
| 1998 | 65,000 | 10,400 | 1,630 | 2,510 | ||||||
| 1999 | 71,400 | 9,960 | 1,440 | 2,390 | ||||||
| 2000 | 70,000 | 12,300 | 1,670 | 2,430 | ||||||
| Thousands of dollars | ||||||||||
| Crushed stone - Value (thousand dollars) | Construction sand and gravel - Value (thousand dollars) | Industrial sand and gravel - Value (thousand dollars) | Clay - Value (thousand dollars) | |||||||
| 1971 | $58,026 | $14,690 | 0 | $3,802 | ||||||
| 1972 | $62,741 | $13,812 | 0 | $4,473 | ||||||
| 1973 | $80,065 | $19,327 | $2,104 | $5,057 | ||||||
| 1974 | $71,583 | $20,844 | $3,869 | $4,648 | ||||||
| 1975 | $65,825 | $15,610 | $2,691 | $4,094 | ||||||
| 1976 | $78,632 | $14,344 | $3,943 | $4,677 | ||||||
| 1977 | $87,254 | $17,267 | $4,003 | $4,989 | ||||||
| 1978 | $108,867 | $22,246 | $5,834 | $9,067 | ||||||
| 1979 | $125,319 | $21,618 | $8,155 | $8,385 | ||||||
| 1980 | $125,019 | $20,910 | $7,825 | $7,307 | ||||||
| 1981 | $117,092 | $18,330 | $10,440 | $6,838 | ||||||
| 1982 | $117,600 | $15,395 | $4,878 | $5,243 | ||||||
| 1983 | $145,001 | $16,900 | $11,689 | $6,680 | ||||||
| 1984 | $168,000 | $18,159 | $12,864 | $8,986 | ||||||
| 1985 | $194,818 | $19,500 | $13,086 | $10,476 | ||||||
| 1986 | $206,500 | $23,127 | $16,656 | $10,970 | ||||||
| 1987 | $237,181 | $30,100 | $15,329 | $15,282 | ||||||
| 1988 | $250,000 | $38,459 | $15,953 | $16,349 | ||||||
| 1989 | $257,976 | $43,700 | $19,902 | $15,528 | ||||||
| 1990 | $276,200 | $44,872 | $15,338 | $9,355 | ||||||
| 1991 | $243,920 | $35,000 | $15,565 | $9,015 | ||||||
| 1992 | $262,400 | $42,717 | $17,533 | $9,775 | ||||||
| 1993 | $297,657 | $53,800 | $18,597 | $11,165 | ||||||
| 1994 | $338,000 | $59,400 | 0 | $11,100 | ||||||
| 1995 | $380,000 | $50,300 | $16,100 | $10,100 | ||||||
| 1996 | $388,000 | $58,400 | $26,900 | $11,100 | ||||||
| 1997 | $460,000 | $66,000 | $23,600 | $23,700 | ||||||
| 1998 | $507,000 | $59,500 | $27,200 | $12,100 | ||||||
| 1999 | $505,000 | $53,900 | $24,800 | $11,300 | ||||||
| 2000 | $491,000 | $69,000 | $27,500 | $18,700 | ||||||