Surface Mining DHM Government Polytechnic 2010 Question Paper

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

Q.1 (a) Write advantages and disadvantages of Surface Mining. 07
(b) Explain in brief the points to be considered for preliminary investigation of Surface mine. 07

Q.2 (a) Define Stripping ratio and explain its importance for surface mining. 07
(b) Explain in brief mineral extraction and transportation method used in surface mine. 07
OR
(b) Explain in brief steps involved in preparation of haul roads. 07

Q.3 (a) Explain in brief points considered for selection of site for Box cut. 07
(b) Draw a plan showing development of a surface mine. 07
OR
Q.3 (a) Explain preparation of LOX with its advantages. 07
(b) Differentiate between Emulsion and ANFO explosive. 07

Q.4 (a) Explain various types of dumpers with its applicability. 07
(b) Sketch and briefly describe spiral layout of shovel dumper combination. 07
OR
Q. 4 (a) Explain the working method of Stacker and Reclaimer. 07
(b) Explain the working method of Bucket Wheel Excavator. 07

Q.5 (a) Compare belt conveyor system with Arial rope way system. 07
(b) Explain in brief working principal of Drag line. 07
OR
Q.5 (a) Explain various method of Secondary blasting. 07
(b) Explain in brief the factors affecting Pit slope stability. 07 

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