Heap-Leach Extraction Involves Piling Crushed Ore into Large Piles and Spraying

question 16

Multiple Choice

Heap-leach extraction involves piling crushed ore into large piles and spraying it with ________________.

• A) an alkaline-cyanide solution
• B) concentrated salt water
• C) high-pressure steam
• D) giant sandblasters
• E) none of these are correct.

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Definitions:

Construct Validity

The extent to which a test or instrument accurately measures the theoretical construct or concept it is intended to measure.

Split-half Reliability

A measure of consistency where a test is divided into two parts and the scores for each half are compared to assess the test's reliability.

Internal Consistency

A measure of the reliability of a test or scale, indicating how well the items on the test measure the same construct or concept.

Content Validity

The degree to which a test or measurement accurately represents the concept it intends to measure, based on the thoroughness of the content included.