And then he tried to open the box with both hands,
holding the knife in his right hand (See photograph ⑤). Because the tape
sticking the edge of the box was not cut, he put his strength into his arms slightly.
As a result, his finger touched the sliding button of the knife and its blade was
pushed. He cut the inside of his left antebrachial region covered with his working
cloth by the back of the blade (the length of the cut wound: approximately 4 cm,
depth: less than 1 mm).
※SOP on common knife handling required workers to wear Kevlar gloves as
protective equipment during work. The injured person wore non-slip Kevlar
gloves (See photograph ①) in accordance with the rule.