Table 2.
Number of area and personal DE-related measurements by agent for the eight mining facilities
Agent | Surveya |
All surveys |
Total | ||||||||||
MIDAS 1976–2001 |
DEMS 1998–2001 |
MESA/BoM 1976–1977 |
Feasibility study 1994 |
Other 1954–1996 |
|||||||||
Areab | Personalb | Area | Personal | Area | Personal | Area | Personal | Area | Personal | Area | Personal | ||
CO | 9746 | 46 | 208 | 0 | 1099 | 0 | 25 | 0 | 46 | 0 | 11 124 | 46 | 11 170 |
CO2 | 8234 | 15 | 390 | 0 | 961 | 0 | 17 | 0 | 49 | 0 | 9651 | 15 | 9666 |
NO | 45 | 0 | 381 | 995 | 24 | 0 | 42 | 69 | 9 | 0 | 501 | 1064 | 1565 |
NO2 | 4288 | 38 | 387 | 1031 | 252 | 646 | 42 | 69 | 76 | 11 | 5045 | 1795 | 6840 |
TD | 1 | 782 | 215 | 0 | 161 | 667 | 32 | 0 | 69 | 703 | 478 | 2152 | 2630 |
RD | 0 | 324 | 209 | 2 | 99 | 0 | 31 | 0 | 158 | 178 | 497 | 504 | 1001 |
SD | 0 | 0 | 121 | 0 | 0 | 0 | 69 | 0 | 20 | 0 | 210 | 0 | 210 |
TEC | 0 | 0 | 224 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 224 | 0 | 224 |
REC | 0 | 0 | 216 | 1156 | 0 | 0 | 0 | 69 | 12 | 4 | 228 | 1229 | 1457 |
SEC | 0 | 0 | 209 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 209 | 0 | 209 |
TOC | 0 | 0 | 224 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 224 | 0 | 224 |
ROC | 0 | 0 | 221 | 1151 | 0 | 0 | 0 | 0 | 0 | 0 | 221 | 1151 | 1372 |
SOC | 0 | 0 | 207 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 207 | 0 | 207 |
DPM/SCD | 0 | 0 | 212 | 0 | 0 | 0 | 0 | 0 | 180 | 102 | 392 | 102 | 494 |
Total | 22 314 | 1205 | 3424 | 4335 | 2596 | 1313 | 258 | 207 | 619 | 998 | 29 211 | 8058 | 37 269 |
DPM, diesel particulate matter; RD, respirable dust; ROC, respirable organic carbon; SCD, submicron combustible dust; SD, submicron dust; SEC, Submicron elemental carbon; SOC, submicron organic carbon; TD, total dust; TEC, total elemental carbon; TOC, total organic carbon.
Surveys: the MSHA MIDAS (1976–2001); the DEMS (1998–2001) (Coble et al., 2010; Vermeulen et al., 2010b); the MESA/BoM (1976–1977) (Sutton et al., 1979); the feasibility study for the DEMS in Facility B (1994) (Stanevich et al., 1997); compliance visits by the State of New Mexico, MSHA hard copy reports, and the mining facilities (1954–1996).
Area measurements; personal measurements. The number includes both full-shift and short-term measurements.