backwork

backwork

(ˈbækˌwɜːk)
n
work carried out under the ground
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Up to three tools can be at work simultaneously with both Y axes and backwork at the same time.
"I've worked there for years andwas due to start backwork soon, but I found I'd lostmy job by reading the ECHO.
James, of Backwork, North Tyneside, was an avid Liverpool fan but his hero was Newcastle United's keeper Shay Given.
* Pickup spindle and three-station backwork tool carrier;
The shop needed to backwork the part, but could not grab the outside of the part with the OD pickoff attachment because it would distort the threads.