Workers injured in an explosion in Shanghai last year at a supplier factory producing iPads claim Apple had inspected the plant’s safety just hours before the blast occurred, according to “AppleInsider” ( Twenty-five people were injured.

The article adds that Zhang Qing, a worker at the factory, said on the day of the incident, the plant’s managers had told employees to clean up dust because Apple’s inspectors were coming through. According to Liu Hengchao, another worker who was injured in the explosion, the inspectors wore white gloves to check for dust.