Pyrite contains sulfur, and one consequence of its oxidation is the introduction of significant amounts of sulphates into mine water.
22.
Darkness fell at 22 : 00 and the Soviet armada stopped and anchored at midnight in the heavily mined water.
23.
The mining water contains copper salts in the form of precipitate onto the iron sheets, forming a " wet " powder.
24.
The Upper Harz Water Regale is one of the largest and most important historic mining water management systems in the world.
25.
A treatment plant and reedbeds were installed to clean the mine water, and this ?.6 million project was commissioned in 1999.
26.
There are many opportunities for short or long bushwalks, often along old gold mining water sluices and peppered by mineral springs.
27.
The total production of uranium from the mine water treatment between 1991 and 2008 can be estimated to be 1, 000 t.
28.
Underneath the icon are the letters IMWaRU, while to the right, the name " Industrial and Mining Water Research Unit " appears.
29.
Some doubters remain, including the West Virginia Division of Natural Resources, which isn't interested in using mine water at its seven fish hatcheries.
30.
Entrepreneur Jim Benson may have the answer : gas stations in space, provided he can figure out how to mine water from asteroids.
