As big energy firms buy out smaller rivals in the Marcellus Shale, one side effect is an...

|By:, SA News Editor

As big energy firms buy out smaller rivals in the Marcellus Shale, one side effect is an improving environmental record, according to a WSJ analysis. XOM, CVX and RDS.A average 38 violations for every 100 Marcellus wells drilled; the smallest companies average 132 violations per 100. Experts say this is partly due to the energy giants' financial resources and more rigorous safety protocols. (also)