A tool used for digging, lifting, and moving bulk materials, such as soil or coal.

A hard, unreactive, colorless compound that occurs as the mineral quartz and as a principal constituent of sandstone and other rocks.

The process of cleaning up contaminated sites by removing or neutralizing pollutants.

A type of lifting device used to hoist and transport heavy materials.

Semisolid slurry that is produced from industrial processes, water treatment, or wastewater.

Methods or devices used to regulate or limit the speed of machinery, vehicles, or processes.

A device that facilitates the distribution of liquid in a spray form for various applications, including dust control and chemical application.

The process of making something more stable or resistant to change, often referring to the treatment of waste or soil to prevent pollution.

A large accumulated stock of goods or materials, often laid up in a mound. 

A container for storing liquids, gases, or other materials.