Government Polytechnic 2010 Diploma in Hospital Management Mining - I - Question Paper

Q.1 (a) discuss in brief issues associated with boring operation. 07
(b) Write different uses of bore holes 07
Q.2
(a) Differentiate ranging from percussive and rotary drilling. 07
(b) discuss different ways of flushing the bore holes. 07
OR
(b) discuss surface arrangements for rotary drilling. 07
Q.3
(a) Write short note on Bore hole survey. 07
(b) Write the advantage of wire line drilling. 07
OR
Q.3 (a) Write short note on chilled shot drilling. 07
(b) Differentiate ranging from plain and electric detonator. 07
Q.4
(a) discuss in brief coromant cut used for blasting. 07
(b) discuss different kinds of delay detonator. 07
OR
Q. four (a) discuss direct and indirect initiation with sketch. 07
(b) discuss with sketch different kinds of secondary blasting. 07
Q.5
(a) Write short note on Muffeled blasting. 07
(b) Enumerate accidents due to use of explosives. 07
OR
Q.5 (a) discuss in brief dealing a mishfire. 07
(b) Write short note on substitute of explosive. 07

Earning:   Approval pending.