Rotary drilling (A) Is not suitable for deposits containing very coarse gravel (B) Hinders the ground water observations and permeability test (C) Is not economical for holes of less than 10 cm (D) All the abov

Rotary drilling
(A) Is not suitable for deposits containing very coarse gravel
(B) Hinders the ground water observations and permeability test
(C) Is not economical for holes of less than 10 cm
(D) All the above
by

1 Answer

Answer :

Answer: Option D
by

Related questions

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