The oil industry is facing a massive shortage of workers

Andrew Burton/Getty Images The rig count has rebounded from the lows seen in late May, a small indication that oil companies in the U.S. could begin drilling anew. Shale drilling is a short-cycle prospect, requiring only a few weeks to drill and bring a well online. Because of this, the collective U.S. shale industry has been likened to the new “swing producer”: low oil prices force quick cutbacks but higher prices trigger new supplies. In essence, shale could balance the market in the way O...