POSTROCK

NATURAL GAS, GAS AND CRUDE OIL

OPERATING OIL AND GAS WELLS FOR OTHERS

DRILLING, COMPLETING AND EQUIPPING OIL AND GAS WELLS, NAMELY, INSTALLING CASING, TUBING, AND PIPES INTO OIL AND GAS WELLS; OIL WELL DRILLING AND PUMPING

NATURAL GAS GATHERING, NAMELY, THE POST-PRODUCTION TRANSMISSION OF NATURAL GAS THROUGH FLOW LINES AND TRUNK LINES PRIOR TO PIPELINE TRANSPORTATION, NATURAL GAS TRANSPORTATION, STORAGE AND DISTRIBUTION

NATURAL GAS, AND OIL PRODUCTION AND PROCESSING SERVICES

OIL AND GAS EXPLORATION