FORT WORTH, Texas — Former employees of the Sandman Signature Hotel developer say they witnessed what they considered to be irregular construction practices during the renovation of the downtown Fort Worth tower, where an explosion likely involving a gas leak injured 21 people this month. The Jan. 8 blast, which originated in or near the 20-story hotel’s basement-level restaurant, happened roughly six months after construction was completed. It has triggered an extensive investigation that could take weeks or longer to determine the exact cause. Fort Worth’s fire chief said last week he believ…
