The rear lid of the vacuum car tank was opened to discharge dust to the receiving dock within the recycling center. After the remaining dust around the outlet of the tank was cleaned off, the driver call out to his partner operator (victim) to step away in order to close the lid. Hearing the partner's reply, the driver moved to the control panel and closed the lid.
As the lid did not completely close, he went to the outlet to check and found the victim sandwiched the upper body between the tank and the lid.