In the attempt to re-caulk work *2 which had not been properly caulked in the caulking machine (hydraulic press), both injured persons (A/B) put both their hands into the space below the photoelectronic safety device (outside the protection range) to hold the work set on the female mold.
At that time, a different associate (C/D: working on a nearby process) operated the two-hand control SW in front of the facility, which started the male mold and caused it to descend. The work instantaneously ledged onto the descending male mold*3, being caught the fingers holding the mold between the work and female mold. *4