What is a mixture of two or more metals that are not chemically combined?

Which of the following is a water contaminant that can cause acid mine drainage?

Which is a mining method used for large ore deposits near the surface that are mined downward?

What is the process of returning land to its original or better condition after mining?

What is the process by which crushed ore is melted at high temperatures to separate impurities from molten metal?

Sand, gravel, and crushed rock are all examples of ______________________.

What is the sinking of regions of the ground with little or no horizontal movement?

Which of the following is NOT mined by dredging?

__________________ deposits occur when minerals are concentrated by wind and water movement into surface deposits.

Salts left behind after evaporation are known as ___________________.

A ________________ is an open pit used to mine materials near the surface.

What is material that bonds with impurities and separates them from molten metal during smelting?

Minerals are arranged in a regular, repeating geometric pattern of _____________.

Which of the following is not a method of subsurface mining?

Gangue minerals

Which of the following is NOT one of the ways that ore minerals may form?

Which of the following is NOT a regulation mining companies must follow?

Surface mining can cause

Which law regulates the release of hazardous substances into the air, soil, and water by mining operations?

Which law set standards to minimize the surface effects of coal mining on the environment?

Funds posted before a mining project begins is called a _____________.

What is a large pile of excess rock from a mine called?

Which of the following is a water contaminant that can cause acid mine drainage?

True or False: We depend on the use of mineral resources in almost every aspect of our daily life.

Which of the following is NOT a native element?

True or False: For mining to be profitable, the price of the final product must be less than the costs of extraction and refining.

Which of the following is NOT a characteristic of metals?

A serious hazard of coal mining is…

Dredging streambeds may be an effective technique for mining ___________.

Before mining a site, a mining company must do all of the following except