Mine Safety and Health Administration (MSHA) - Mining Industry Accident, Injuries, Employment,and Production Statistics Historical Data - Table 01. Number of Stone Operations in the United States, by Primary Activity, 1978-2007

Table 01. Number of Stone Operations in the

United States, by Primary Activity, 1978-2007

	Underground Mines			Surface Mines
Year	Underground	Surf at UG	Total	Strip	Dredge	Other	Total
1978	135	4	139	3,473	21	-	3,494
1979	133	2	135	3,687	21	-	3,708
1980[1]	134	1	135	3,716	15	-	3,731
1981	128	5	133	3,723	16	-	3,739
1982	122	5	127	3,085	12	-	3,097
1983	117	2	119	3,259	8	-	3,267
1984	110	4	114	3,273	10	-	3,283
1985	110	-	110	3,388	12	-	3,400
1986	111	1	112	3,194	13	-	3,207
1987	108	2	110	3,215	14	-	3,229
1988	106	4	110	3,290	12	-	3,302
1989	108	1	109	3,248	13	-	3,261
1990	106	2	108	3,273	14	-	3,287
1991	107	1	108	3,243	9	-	3,252
1992	104	2	106	3,270	9	-	3,279
1993	104	-	104	3,279	9	-	3,288
1994	103	-	103	3,275	11	-	3,286
1995	101	1	102	3,286	10	-	3,296
1996	100	1	101	3,301	10	-	3,311
1997	103	1	104	3,363	9	-	3,363
1998	108	1	109	3,463	6	-	3,469
1999	113	-	113	3,599	6	-	3,605
2000	117	1	118	3,741	9	1	3,751
2001	110	3	113	3,902	12	-	3,914
2002	118	3	121	3,927	9	-	3,936
2003	118	2	120	3,966	9	-	3,975
2004	123	1	124	4,024	8	-	4,032
2005	124	2	126	4,108	7	-	4,115
2006	120	2	122	4,197	4	-	4,201
2007	110	3	113	4,267	6	-	4,273

Table 01. Number of Stone Operations in the

United States, by Primary Activity, 1978-2007 – continued:

Year	Total Mining	Indp Shops/Yrds	Mills	Total w/o Office	Office	Grand Total
1978	3,633	33	266	3,932	18	3,950
1979	3,843	28	276	4,147	16	4,163
1980 1/	3,866	22	312	4,200	18	4,218
1981	3,872	20	383	4,275	24	4,299
1982	3,224	19	317	3,560	43	3,603
1983	3,386	17	252	3,655	25	3,680
1984	3,397	14	276	3,687	31	3,718
1985	3,510	15	273	3,798	44	3,842
1986	3,319	12	249	3,580	19	3,599
1987	3,339	13	241	3,593	12	3,605
1988	3,412	15	226	3,653	10	3,663
1989	3,370	15	213	3,598	16	3,614
1990	3,395	16	230	3,641	9	3,650
1991	3,360	15	235	3,610	17	3,627
1992	3,395	15	239	3,639	15	3,654
1993	3,392	15	258	3,665	16	3,681
1994	3,389	19	215	3,623	23	3,646
1995	3,398	20	212	3,630	19	3,649
1996	3,412	20	207	3,639	16	3,655
1997	3,476	18	212	3,706	6	3,712
1998	3,578	15	215	3,808	14	3,822
1999	3,718	13	218	3,949	13	3,962
2000	3,869	11	215	4,095	18	4,113
2001	4,027	12	216	4,255	27	4,282
2002	4,057	13	213	4,283	28	4,311
2003	4,095	14	211	4,320	37	4,357
2004	4,156	16	205	4,377	24	4,401
2005	4,241	15	201	4,457	33	4,490
2006	4,323	16	201	4,540	33	4,573
2007	4,386	17	210	4,613	26	4,797

[1] Beginning in 1980, independent contractors working on mine property performing mine exploration, development, production, maintenance, repair and construction work were assigned an identification number, and reported to MSHA, and are included in the count of operations. Since 1983, the contractors were separated from the mines.

Year

Office