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The stoping method selected, where ore body is thick veins type ore and walls are strong and steeply dipping ore i.e. footwall steeper than angle of repose of broken ore is . . . . . . . .
For steeply dipping, massive ore body with hard horizontal rock, which mining method suitable.
The method of stoping for narrow and steeply dipping ore with any type of ore and wall is . . . . . . . .
A vertical ore body having a consistent width of 100 m has been excavated by the open pit method up to a depth of 100 m at a pit slope angle of 45°. The figure shows the cross section of the open pit. If the ore body is further excavated by a depth of 10 m, maintaining the same pit slope angle, the ratio of waste rock to ore is
Introduction to Mining Engineering mcq question image
The following information is provided for an ore deposit:
Number of waste blocks = 10
Number of ore blocks = 5
Volume of each waste block, m3 = 600
Total cost of waste handling per m3 = Rs. 100
Tonnage of each ore block = 400
Total cost of ore handling per ton = Rs. 150
Sale price of ore per ton = Rs. 500
The net cash flow of mining the deposit in lakhs of rupees, is
Which of the following statements are true with respect to iron ore?
I. Limestone and coal are important for smelting iron ore
II. More than 20% of the world iron ore deposits are in India
III. Odisha and Jharkhand top in the production of iron ore
IV. Iran is the largest buyer of Indian iron ore
An ore block of length 30m and height 20m having an average width of 1.5m with sharp boundary walls is mined with a minimum mining width of 2m. If the tonnage factors are 3 t/m3 for ore, 2 t/m3 for wall rock and average grade of ore is 10%, the diluted grade of ore mined in percent is
Consider the following statements about Ashokan rock edicts :  1. Major Rock Edict XIll records Ashoka's remorse at the sufferings caused by his Kalinga campaign.  2. Major Rock Edict X records Ashoka's visit to Lumbini.  3. Major Rock Edict XII refers to Dhamma Mahamattas as a new category of officers instituted by Ashoka.  4. Major Rock Edict XII speaks about showing tolerance towards all sects. Which of the statements given above are correct?
Which one of the following four addresses is NOT EXACTLY the same as the one given below? Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576­ - 2041 (i) Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576­ - 2041 (ii) Adironduck Rock & River Guide Serivce, Inc. P.O. Box 219 Keene, New York 12942 (518) 576 - ­2041  (iii) Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576 - ­2041 (iv) Adirondack Rock & River Guide Service, Inc. P.O. Box 219 Keene, New York 12942 (518) 576 - ­2041 
Match the following: List - I List - II i. Ore of Pb (Lead) a. Siderite ii. Ore of Fe (Iron) b. Galena iii. Ore of Cu (Copper) c. Philosopher's wool iv. Ore of Zn (Zinc) d. Malachite