Construction Products Hole Control A unique cost-saving fluid formulated to speed-up hole-collaring, reduce collar sloughing and stabilize the total blasthole RDO 302 ES Environmentally safe vegetable oil based rock drill lubricant RDO 302 ES (SOL) Environmentally safe vegetable oil based rock drill lubricant (Water Soluble) ES Thread Compound An environmentally safe vegetable oil-based replacement for the present pipe dopes that contain heavy metals and petroleum carriers