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Coal Production by Coalbed Thickness and Mine Type

Table 4. xls pdf Annual Coal Report
Coal Production by Coalbed Thickness and Mine Type, 2006 (Thousand Short Tons)
Coalbed Thickness (inches)	Underground	Surface	Total
< 7	-	38	38
7-12	-	3,107	3,107
13-18	180	6,576	6,756
19-24	824	15,187	16,011
25-30	5,528	22,915	28,442
31-36	17,250	29,636	46,886
37-42	29,966	18,074	48,040
43-48	37,986	24,031	62,017
49-54	27,459	19,591	47,050
55-60	38,365	25,322	63,687
61-66	34,773	12,789	47,562
67-72	61,717	22,212	83,930
73-78	7,041	8,972	16,013
79-84	19,961	6,339	26,300
85-90	8,140	6,113	14,253
91-96	11,976	6,687	18,663
97-102	13,576	6,575	20,151
103-108	5,319	9,281	14,600
109-114	6,545	5,955	12,500
115-120	374	8,792	9,167
> 120	31,808	544,102	575,909
Unknown[1]	235	680	1,668
U.S. Total	359,022	802,976	1,162,750
[1] Includes mines with production of less than 10,000 short tons, which are not required to provide data, and refuse recovery. - = No data are reported. Note: · Totals may not equal sum of components because of independent rounding. Source: · Energy Information Administration Form EIA-7A, "Coal Production Report," and U.S. Department of Labor, Mine Safety and Health Administration, Form 7000-2, "Quarterly Mine Employment and Coal Production Report."