Backstone

From WebRef.org
Jump to navigationJump to search

Eng. Shaly mudstone used for cooking slabs, quarried near Delph, Yorkshire. Also, a bed in the Staffordshire Coal Measures. Arkell

Source: Dictionary of Mining, Mineral, and Related Terms


Sponsor: $20 off annual supply of Air Optix Aqua contacts with the code 55ANNUAL

New Year's Web Hosting