Production of Marcellus Shale natural gas in Pennsylvania rose again in the second half of 2011, slightly
The state reported Friday that drillers produced the equivalent of 1.66 billion cubic feet of gas per day from July to December.
That's up from about 1.19 billion cubic feet per day in the previous six months.
That translates into a yearly average of about 1.42 billion cubic feet per day. That's up slightly from previous industry projections of 1.3 billion for 2011.