Mining - I Government Polytechnic 2010 DHM Question Paper

Exam Board: Government Polytechnic
Question Paper Course: Diploma Hospital Management
Subject of Question Paper: Mining - I
Time allotted: 3 Hours
Max. Marks: 70
Year of the exam paper: 2010
Question Paper Format: Text

Q.1 (a) Explain in brief problems associated with boring operation. 07
(b) Write various uses of bore holes 07

Q.2 (a) Differentiate between percussive and rotary drilling. 07
(b) Explain various ways of flushing the bore holes. 07
OR
(b) Explain 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 between plain and electric detonator. 07

Q.4 (a) Explain in brief coromant cut used for blasting. 07
(b) Explain various types of delay detonator. 07
OR
Q. 4 (a) Explain direct and indirect initiation with sketch. 07
(b) Explain with sketch various types 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) Explain in brief dealing a mishfire. 07
(b) Write short note on substitute of explosive. 07 

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