According to Lancaster Online, the collision occurred along Route 222 between Lancaster and Quarryville.
Upon arriving, responders found the driver of the pickup, Kevin Grove, 34, and a female passenger of the pickup unconscious. Grove was extracted from the vehicle and rushed to Lancaster General Hospital with serious injuries. The female passenger was pronounced dead at the scene.
The driver of the dump truck, Michael Martin, 35, was also transported to Lancaster General Hospital, though his injuries were not considered serious.
State police are investigating the crash. The cause of the accident remains uncertain.
The following information was provided by the National Highway Traffic Safety Administration (NHTSA):