
• (n.) The refuse thrown back into the excavation after removing the coal. It is called also gob stuff. • (n.) The process of packing with waste rock; stowing.
Found on
http://thinkexist.com/dictionary/meaning/gobbing/
Gob'bing noun [ See lst
Gob .]
(Mining) (a) The refuse thrown back into the excavation after removing the coal. It is called also
gob stuff .
Brande & C. (b) The process of packing with waste rock; stowing.
Found on
http://www.encyclo.co.uk/webster/G/40

(Coal-mining) - the action of packing an excavated space with waste rock; the material used for this.
Found on
http://www2.shu.ac.uk/sfca/glossary.cfm
No exact match found.