DREDGING / RECLAMATION |
|
Dredging is miscellaneous excavator-type work underwater, usually in shallow sea or fresh water.
A dredge is a device for scraping or sucking the seabed, used for dredging.
A dredger is a ship or boat equipped with a dredge.
American usage sometimes calls the ship or boat a dredge.
|
MINING (ORES, PROCESSING) |
|
Mining is the extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein, or (coal) seam. Materials recovered by mining include bauxite, coal, diamonds, iron, precious metals, lead, limestone, nickel, phosphate, rock salt, tin,uranium, and molybdenum. Any material that cannot be grown from agricultural processes must be mined. Mining in a wider sense can also include extraction of petroleum, natural gas, and even water.
|
|
