gmsminerepaircom G M S M i n e R e p a i r M a i n t e n a n c e S P E C I A L I Z E D MINING S E R V I C E S G R OUND C O N T R O L 3013348186 21 Pumped from surface or underground Expands 30X original volume Strong adhesion properties to surrounding strata Void Filling Back Filling Shield Tips Expansion Foam Form Shield Tips to Face QC 30X Expansion Rate