room-and-pil|lar

room-and-pil|lar
room-and-pil|lar «ROOM uhn PIHL uhr, RUM-», adjective.
of or designating a system of mining coal in which a series of rooms is cut into the coal bed, in each of which the miners leave columns of coal standing to help support the roof until they mine out a particular area. Most underground coal mines in the United States are room-and-pillar mines.

Useful english dictionary. 2012.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • er — er·i·an·thus; er·ic; er·i·ca; er·i·ca·ce·ae; er·i·cad; er·i·ca·les; er·i·ce·tal; er·i·ce·tic·o·lous; er·i·coid; er·i·co·phyte; erig·er·on; er·i·glos·sa; er·ik·ite; er·i·na·ceous; er·i·na·ceus; er·in·ite; er·i·nose; er·i·o·bot·rya;… …   English syllables

  • age — age·a·ble; age; age·less; age·long; age·net·ic; al·ien·age; al·loy·age; al·tar·age; am·per·age; an·ec·dot·age; ap·pend·age; ar·rear·age; av·er·age·ly; av·er·age·ness; bale·age; bal·last·age; bar·on·age; bar·on·et·age; bar·rel·age; bea·con·age;… …   English syllables

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”