Table 1.

National estimates of demographic characteristics for metal and nonmetal miners, National Survey of the Mining Population, employees, 2008.³

	Metal				Nonmetal
Demographic characteristic	National estimate	National estimate95% CI	National percent	National percent95% CI	National estimate	National estimate95% CI	National percent	National percent95% CI
Sex
Male	33,562	15,620–51,504	86.2	81.9–90.4	17,241	12,526–21,956	89.3	86.6–91.9
Female	5,383	1,152–9,615	13.8	9.6–18.1	2,074	1,174–2,973	10.7	8.1–13.4
Age (mean, years)	41.5	39.3–43.8			42.0	40.2–43.8
Education
<9th grade	63	0–153	0.2	0.0–0.4	193	80–305	1.1	0.4–1.8
9–12th grade	1,030	276–1,784	2.9	0.9–4.9	1,154	720–1,589	6.6	3.6–9.6
High school graduate	18,934	9,552–28,317	53.3	44.0–62.6	11,242	6,837–15,647	64.2	58.1–70.3
Some college or technical school	12,377	4,629–20,125	34.9	27.2–42.5	2,956	2,371–3,540	16.9	11.6–22.1
College graduate	3,104	1,515–4,692	8.7	6.1–11.3	1,958	922–2,993	11.2	7.9–14.5
Ethnicity
Hispanic or Latino	9,483	1,132–17,834	24.6	14.4–34.9	1,368	854–1,883	8.3	5.7–10.9
Non-Hispanic or Non-Latino	29,008	14,213–43,803	75.4	65.1–85.6	15,171	12,851–17,491	91.7	89.1–94.3
Race
American Indian/Alaska Native	1,073	0–2,156	3.3	1.3–5.4	87	24–150	0.5	0.1–0.8
Asian
Black	1,492	0–3,059	4.7	0.6–8.7	2,479	1,483–3,474	13.6	8.0–19.3
Pacific Islander
White	29,276	16,297–42,255	91.4	86.8–96.0	15,567	10,412–20,721	85.6	79.8–91.4

^* No estimates possible because not represented at all in sampled population.

^† Data suppressed because of insufficient numbers within sampled population.