At conventional mines, the ore goes through a mill where it is first crushed.

Conventional mines were laid under the German front line, ready to be blown immediately before the assault.

The hull shuddered as his conventional mines were released from their hatches.

He also received instruction in arming conventional mines and rigging explosives.

As of 2003, there were 2 solution mines and 8 conventional mines operating in Saskatchewan.

For conventional mines, the analysis was based on hypothetical mine models developed by Natural Resources Canada.

As such, the ISL technique generally has lower production costs than conventional mines.

Although this is costly in conventional mines, it is prohibitively expensive in deep, hot operations.

Here, unlike any conventional mine, the diamonds were scattered as casually as bird droppings across the sand.

Although the body is plastic, the fuze itself contains a steel striker and spring, which make it detectable by conventional mine detectors.

Conventional mines of the era employed a contact-fuzed explosive charge within a buoyant shell suspended over an anchor attached by a wire rope.

It is quite possible that it may not have been opened as a conventional mine, but new in situ techniques may have made it viable.

That means that conventional mine production, generating copper concentrates for further processing at smelters, actually fell by an even harder 3.9 percent year-on-year in Jan-May 2008.

These are the same shape as the tub, but a little smaller, and designed so that, unlike a conventional mine, they don't have to be directly beneath the target when detonated to destroy it.

Currently, due to the depressed nature of the world uranium market and higher costs at conventional mines, only 5 ISL uranium mines are operating in the USA, despite 12 being licensed.

Another feature of the uranium mining industry in the US is that, given the continued depressed nature of the world market, many of the conventional mines have been closed or placed on a standby basis.

For the costs of ISL, there is generally reduced labour requirements, lower chemical inputs, and since there is no excavation and movement of large quantities of ore, overall operating costs are lower compared to conventional mines.