hard-rock mine

hard-rock mine

[′härd ¦räk ′mīn]
(mining engineering)
A mine located in hard rock, especially a mine difficult to drill, blast, and square up.
References in periodicals archive ?
That permitting effort at Red Dog has continued in earnest this year, even through market prices for the base metals produced at the remote hard-rock mine have remained lower than past years.
After 15 years of exploration at the remote Donlin Creek gold project in southwest Alaska, property owners have put together an open-pit, hard-rock mine proposal backed by a feasibility study indicating low cash costs to produce more than a million ounces of gold annually, while providing up to 800 year-round jobs.
CBR Gold Corp released in late March an updated resource for Niblack, a shuttered historic hard-rock mine located on the Prince of Wales Island in Southeast.
which had acquired Nixon Fork the previous year from Nevada Consolidated, a company that first opened the hard-rock mine in 1995.
And now, after spending about $50 million in the last three years on the exploration property, Pogo's operators have taken the leap-submitting to state and federal agencies a plan to build and operate a hard-rock mine at the deposit, located 38 miles northeast of Delta Junction.
which owns the huge Fort Knox hard-rock mine near Fairbanks, have deeper pockets and more flexibility to deal with reduced prices.
Hard-rock mine employment also increased during the year due to increased production at Red Dog and Greens Creek mines, and the commissioning of the Fort Knox and Illinois Creek mines.
controls numerous advanced-stage projects, including the Illinois Creek deposit, slated to become Alaska's first Native-owned hard-rock mine.
Exhibits immerse visitors in the story-from the humorous, like the Colorado-Texas "tomato wars" of the 1980s, to the heart-wrenching 1864 Sand Creek Massacre-and allows them to dive into Colorado's past while enjoying interactives like a virtual ride in a real Model T; testing their skills on a ski-jump simulator; and setting off dynamite in an 1880s hard-rock mine.
Farther north, at the Empire Mine state park in Grass Valley, visitors can descend a few steps into the mouth of a hard-rock mine - and gaze into a hole that ultimately extends more than two miles down and is interlaced with 367 miles of tunnels.
In a reconstruction of a hard-rock mine, they fire up noisy hammer drills to punch holes in granite boulders (the noise is deafening).
Wilson's extensive mine engineering experience in underground coal, hard-rock mines comprises: Applied rock mechanics; Mine design and strata control in civil and mining projects; and health (including training in developing countries).