After weeks of showing stability, the number of rigs deployed in North Dakota dipped below 30 for the first time in years, state data posted early Monday show. State data posted early Monday showed 29 in active service, a 9 percent decline from the previous week. Once inspectors reviewed the figures later in the day , the official count was raised to 30. The state had 32 rigs actively engaged in oil and gas exploration and production for three straight weeks in March. The decline followed a week of volatility in crude oil prices, which ended last week with much of the gains for the year erased after Saudi Arabia cast doubt […]