Canopy Air Curtain Technology for Shuttle Car Cabs

By Hua Jiang, NIOSH Past studies have shown that shuttle car operators on mines using blowing face ventilation can experience high dust levels when loading at the face because they are essentially in return airflow. We entered into an RFP with Fletcher to develop...

Longwall Gob Permeability

By Josh Silvis, manager of hydrogeology, CONSOL Energy Roof caving induced by longwall retreat results in a broken, bulked rock mass commonly referred to as gob. Given the inaccessibility and difficulty in direct measurement of gob characteristics following gob...
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