Penentuan Ergonomic Assessment Method untuk mengidentifikasi dan menilai ergonomic hazards di pekerjaan yang paling berisiko menimbulkan Musculoskeletal Disorders : studi kasus perusahaan Tambang Batubara yang menerapkan OHSAS 18001:2007 = Ergonomic Assessment method determination to identify and assess Ergonomic Hazards at the work which have the most risk to Musculoskeletal Disorders : case study on a coal mining company implementing OHSAS 18001:2007 = Ergonomic assessment method determination to identify and assess ergonomic hazards at the work which have the most risk to Musculoskeletal Disorders : case study on a coal mining company implementing OHSAS 18001:2007 / Anna Murti