Back entry

From WebRef.org
Jump to navigationJump to search Speak any language like a native! 41 languages, real conversations, practical topics. Start now!

The air course parallel to and below an entry or the entry used for secondary purposes in two-entry system of mining. Locally, any entry not having track in it. BCI

Source: Dictionary of Mining, Mineral, and Related Terms


Sponsor: Plus Size Spring Collection with Free Shipping World-wide