Uses to Protect the EnvironmentRiverbed

In addition to the uses already described, crushed limestone is found in a variety of applications that help protect the environment.

Examples are:

* Preventing sulfur from being emitted into the air by coal burning power plants using the methods of

   (1) flue-gas desulfurization or (2) fluidized bed combustion.

* Prevention of flood damage as the major component of underground stormwater infiltration basins.

* Neutralizing acid drainage on coal mine reclamation projects.

* Neutralizing the effects of acid rain in lakes and streams.

* Prevention of soil erosion when used as gabion stone, rip-rap and drainage blankets.

* Sewage filtration systems.