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Rock Blowing Ground Tech can blow aggregate materials for a long period of time and at great distances.  The equipment can blow round or crushed rock up to 2-3" in diameter, beach sand or garden sand, pea gravel, cinder rock, pumice, and soil blends.   It's capable to blow soil and aggregate materials behind retaining walls, in drainage ditches, and onto roof top gardens.  Below are some pictures of a Ground Tech crew on a project, blowing rock into a bridge construction area.