STAS 11771/6-1984 NATURAL RADIOACTIVE NUCLIDES WITH POLLUTION POTENTIAL PROCEEDED FROM ORES AND COALS 222 radon specifical emanation determination of rocks, ores, powders and secondary materials of extractive mining industry
Prezentul standard stabile?te metodele de determinare a eman?rii specifice de radon 222 din roci, minereuri, pulberi ?i materiale secundare din industria extractiv? minier?, ?n scopul calcul?rii (conform anexei) a debitului de aer necesar pentru dilu?ia r
STAS 11771/6-1984 history
1984STAS 11771/6-1984 NATURAL RADIOACTIVE NUCLIDES WITH POLLUTION POTENTIAL PROCEEDED FROM ORES AND COALS 222 radon specifical emanation determination of rocks, ores, powders and secondary materials of extractive mining industry