SPRINGDALE, Pa. — Crews attempted to demolish the last building standing at the old Cheswick power plant in Springdale on Sunday morning. The entire boiler house was set to be brought down with cables. However, when the demolition happened around 9:30 a.m., only part of the building collapsed, sending a cloud of dust into the air. The building didn’t fall entirely because of an issue with the cables. After assessing the building, engineers determined that around 70% had collapsed. In a press briefing on Sunday afternoon, officials said they planned to bring down the remaining structure on March 8 between 10 a.m. and noon, weather permitting. Officials said the Cheswick Power Station property owner and its contractor have ensured the remaining structure is currently stable.