Which of the following factors does NOT influence the choice of mining method?

Solution (By Examveda Team)

Ore body geometry refers to the shape, size, and orientation of the ore deposit within the earth.
Rock mechanics describes the physical and mechanical properties of the rocks surrounding and containing the ore body, including strength, stress, and fracturing.

Market price of ore is the economic value of the extracted ore, influencing the profitability of different mining methods.

The choice of mining method is a crucial decision in mining engineering, heavily influenced by various geological and economic factors.

Option A, Ore body geometry, significantly influences the choice of mining method. Different geometries (e.g., tabular, massive, disseminated) necessitate different approaches to extraction. A steeply dipping vein might require underground methods, while a flat-lying deposit may lend itself to surface mining.

Option B, Rock mechanics, are equally critical. The strength and stability of the surrounding rock determine whether open-pit or underground methods are feasible and safe. Weak rocks might necessitate support systems that alter the chosen method.

Option C, Market price of ore, is a major economic driver. If the ore price is high, more expensive and complex methods might be justified to extract all of the ore, even from challenging geometries or rock conditions. Conversely, a low ore price may necessitate simpler, less costly methods, focusing on higher-grade ore.

Option D, Color of ore, is irrelevant to the choice of mining method. The color of the ore has no bearing on the feasibility, safety, or economics of extraction. The physical properties and geological context of the deposit are far more significant.

Therefore, the correct answer is D: Color of ore because the color is an aesthetic property that has no impact on the engineering decisions related to mining methods.