Abstract: This disclosure is directed to a clog-free grout emplacement gun particularly adapted for use in coal or similar mines for retaining roof bolts in bore holes, and includes a first conduit for conveying a gaseous medium along a first path, a second conduit for conveying grout material along a second path, a mixing chamber for admixing the gaseous medium and the grout material, a passage for directing the admixed gaseous medium and grout material along a third path toward and beyond a discharge orifice of a nozzle toward a predetermined point, a tube for directing a liquid medium along a fourth path paralleling the third path outwardly of the discharge nozzle, and a control device for controlling the flow of the media and material to effect admixture thereof at a point beyond the orifice of the discharge nozzle.