DD Grout Plugs - Stemming Plug Installation with captions

This animation shows the installation of the cement Stem Boss Plug, a method of stemming for underground hardrock mining that was developed by DD Grout Plugs. Testing on these plugs has shown a minimum resistance achieved of 9 Tonnes, unprecedented for stemming particularly in upholes and several orders of magnitude stronger than anything else available. This product is being updated with prototypes being made at present. Stemming Plugs can be used for slashing shots to protect mining infrastructure from rifling, VCR rising, and to improve fragmentation in longhole open stoping or sub-level stoping mining methods. These are available for 76mm to 102mm upholes, and will work equally well in downholes. For more information please go to www.ddgroutplugs.com.au or email us at [email protected] (Patent Application No.'s PCT/AU2013/000489 and Australia 2013903545)