Drilling And Blasting - Study Mode
[#761] The minimum air quantity required at all working places in B/P is.
Correct Answer
(C) 60 m 3 /min
[#762] Small magzines in mine premises are accorded the licence in the form.
Correct Answer
(B) J
[#763] The plane of rotation of the vanes of anemometer should be as near as
Correct Answer
(C) Normal to the direction of air flow
[#764] When explosive charges in a hole is separated by air gaps in stead of stemming materials then the process is known as
Correct Answer
(B) Air decking
[#765] To deal with the misfires a relieving hole shall be so placed that at no point shall it be nearer than "A" cm from the misfired hole. A is given by
Correct Answer
(D) 30 cm