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Table 4 Radon concentration after using optimized mitigation system (Bq m−3)

From: Radiological survey on radon entry path in an underground mine and implementation of an optimized mitigation system

  M 1
Min.–Max. (mean)
M 2
Min.–Max. (mean)
M 3
Min.–Max. (mean)
Three locations (Ave.)
Monday 79 ± 34–415 ± 54 (166 ± 44) 91 ± 48–334 ± 77 (166 ± 43) 170 ± 44–389 ± 95 (216 ± 53) 196 ± 53
Tuesday 103 ± 32–405 ± 89 (161 ± 44) 113 ± 30–463 ± 101 (173 ± 44) 148 ± 41–350 ± 82 (199 ± 49) 191 ± 54
Wednesday 91 ± 32–391 ± 88 (150 ± 40) 91 ± 30–473 ± 103 (176 ± 48) 145 ± 38–383 ± 84 (201 ± 53) 159 ± 44
Thursday 90 ± 30–415 ± 97 (174 ± 47) 91 ± 35–313 ± 77 (160 ± 43) 129 ± 37–402 ± 93 (180 ± 49) 185 ± 49
Friday 126 ± 32–405 ± 92 (182 ± 49) 90 ± 35–331 ± 81 (166 ± 43) 130 ± 35–472 ± 97 (186 ± 50) 192 ± 53
Average 166 ± 45 209 ± 44 196 ± 51  
\(\sum \mathrm{Average}\) 205 ± 49