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Process of excavating pits or trenches with vertical impermeable walls by means of mud circulation during drilling
Use of rotary drilling rig mounted on tracks above trench; rig is moved back and forth each time excavating some 60 to 150 cm of ground.
Process of excavating pits or trenches with vertical impermeable walls by means of mud circulation during drilling
Use of rotary drilling rig mounted on tracks above trench; rig is moved back and forth each time excavating some 60 to 150 cm of ground.
Process of excavating pits or trenches with vertical impermeable walls by means of mud circulation during drilling
Procedimiento para hacer excavaciones en pozos o zanjas con paredes verticales impermeables, por medio de la circulacion de fango durante el barrenado
Menendez, J. (author)
1958
11 pages
Article (Journal)
Spanish
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