Umatshini wokugaya ukwabiza i-rotary drilling rig.Umatshini we-Piling uneenzuzo ezininzi ezifana nobukhulu obuncinci, ubunzima obulula, ukusebenza okulula, ukulungeleka ekwakhiweni, kunye neendleko ezincinci njl. Kodwa ukuba ukusilela komatshini wokupakisha okanye ukusebenza okungafanelekanga, kuya kukhokelela ekusebenziseni okungaqhelekanga kweoli.&nbs...
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