Birtley coal picker

From WebRef.org
Jump to navigationJump to search 160x600 Home Page

An electric picker that distinguishes between good coal and slate by their different electrical conductivities. It is said to be more accurate than the human slate picker, who, when fatigued, may fail to remove all the impure material. Mitchell

Source: Dictionary of Mining, Mineral, and Related Terms


Sponsor: Save 10% Use promo code SAVE-AFPA when shopping for your AFPA Fitness Certification Exam.