Asked | Open questions | Answered Points Date Pair Term / Answer given Level Status Gloss - Apr 12 '11 eng>esl Derryk Hand Operador de la torre pro closed ok - Dec 11 '09 eng>esl rig pass Curso (de seguridad básica) "Rig Pass" pro closed ok - Sep 5 '09 eng>esl NAF mud system sistema de lodos de perforación no acuosos pro closed ok 4 Jun 5 '09 eng>esl Blast Joints empalmes de explosión pro closed ok - Nov 23 '08 eng>esl dirty coal carbón contaminante/sucio easy closed ok - Jun 16 '08 eng>esl within a minimum period of time en/dentro de/ un período mínimo de tiempo pro closed ok Asked | Open questions | Answered