Explain how hard rock mining works.

exploration, extraction, and beneficiation. Exploration involves locating and evaluating a suitable ore. Several mineral exploration methods are: ... Drilling is typically undertaken if geologic conditions are promising and surface sampling indicates a possible ore body.

Explanation:

ard rock mining requires removing ore from other substances such as quartz. Ores have different qualities and impurities depending on how they were formed. Often gold occurs as veins in quartz, which is mined as rocks from within a mine. This requires special machinery and often requires the skills of a geologist.

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

        i'm fairly sure that the correct answers are 2 and 3.

        i used both my knowledge of world history and the process of elimination to obtain these answers. option 1 cannot be a possible selection because the mandate of heaven belongs to ancient chinese philosophical belief. option 4 sounds like it would benefit the region than detriment it. however, both 2 and 3 explain a potential reason for what could have contributed to the fall of the roman empire.

      hope this ! if i were you, i'd get a second opinion, because i haven't taken this course for a year. best of luck!

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