Penentuan Daerah Aman terhadap Tingkat Kerja (Working Level) dan Konsentrasi Gas Radon di Terowongan Tambang Bawah Tanah (Studi Kasus : Tambang Emas PT. Aneka Tambang Tbk, Cikotok)
Abstract
The measurement of radon concentration (222 Rn) with decay were determined by working level in three (L-300 north, L-300 south and L-200 south) in Cikidang - Cikotok West Java.