The Technic Study on Surface Miner Trencor TI460 Tools Working Performance in Optimizing the Production of the Limestone Quarry Mining in PT. Tambang Semen Sukabumi, Kecamatan Jampang Tengah and Nyalindung, Kabupaten Sukabumi, Jawa Barat Province - Nugraha, Dindin Awaludin (Universitas Islam Bandung, 2017)