 WILLIAMSVILLE, N.Y., July 12, 2021 GLOBE NEWSWIRE -- Today, Seneca Resources Company, LLC Seneca, the exploration and production segment of National Fuel Gas Company NYSE: NFG, and NexTier Oilfield Solutions Inc. NexTier NYSE: NEX announced their intent to pioneer an innovative study evaluating the carbon emissions generated by various types of equipment commonly used for hydraulic fracturing of oil and natural gas wells. The results of this study are expected to provide the industry with a comparative insight on the emissions profile of these technologies, including those utilizing Tier 2 diesel and dynamic gas blending DGB engines, Tier 4 diesel and DGB engines, natural gas-powered turbine engines, and electric frac equipment powered by natural gas-fueled reciprocating engines. 