The effort to reduce and eliminate the dangers of mining activities by preventing losses that is by implementing the application of safety management. Safety management systems are applied throughout the world. The world gets permission for industrial safety and health to get occupational safety and health. This safety management system is not only applied in Indonesia but also applied in several other countries such as South Korea, Singapore, Malaysia and Australia. In this study an analysis of the differences in the safety management system in these countries with an outline with the aim to carry out an analysis of the safety management system in large rock countries. The comparison obtained from the management system required and applied by the government regarding the safety system in these countries. For Indonesia and Singapore, a safety management system must be implemented in industrial companies, whereas for countries such as South Korea the safety management system is voluntary in other words the safety management system is implemented voluntarily by the industry. Australia is more applying safety management system standards and references for industrial needs. Safety management systems in Australia, South Korea and Malaysia are being readjusted to suit industry needs.

The effort to reduce and eliminate the dangers of mining activities by preventing losses that is by implementing the application of safety management. Safety management systems are applied throughout the world. The world gets permission for industrial safety and health to get occupational safety and health. This safety management system is not only applied in Indonesia but also applied in several other countries such as South Korea, Singapore, Malaysia and Australia. In this study an analysis of the differences in the safety management system in these countries with an outline with the aim to carry out an analysis of the safety management system in large rock countries. The comparison obtained from the management system required and applied by the government regarding the safety system in these countries. For Indonesia and Singapore, a safety management system must be implemented in industrial companies, whereas for countries such as South Korea the safety management system is voluntary in other words the safety management system is implemented voluntarily by the industry. Australia is more applying safety management system standards and references for industrial needs. Safety management systems in Australia, South Korea and Malaysia are being readjusted to suit industry needs.

Penelitian ini mempelajari tentang pemanfaatan material overburden batubara yaitu claystone, yang akan dikombinasikan dengan zeolit dan arang aktif tempurung kelapa untuk menurunkan logam Mn dalam air asam tambang batubara. Aktivasi claystone dilakukan dengan 3M NaOH, zeolit dengan 3M HCl, dan arang tempurung kelapa dengan 4M HCl. Komposit dibuat dengan mencampurkan ketiga adsorben dengan  perbandingan (Claystone[C]:Zeolit[Z]:Arang aktif [A]) = 25:25:50. Hasil uji luas permukaan menunjukkan bahwa komposit memiliki luas permukaan 62,44 m2/g. Adsorpsi dilakukan dengan sistem batch menggunakan alat hot plate stirer pada variasi waktu kontak 30, 60, 90, 120, dan 150 menit. Berdasarkan hasil uji adsorpsi,  7,5 gram komposit  mampu menurunkan konsentrasi Mn dengan efektivitas 43,64%  dan kapasitas adsorpsi 0,445 mg/g pada waktu kontak 30 menit.  Kata kunci : adsorpsi, komposit, efektivitas, kapasitas