Some observers attribute a decline in production for the year to this incident.

BBC: Q&A: Kaesong Industrial Complex

Analysts attribute the staffing increase largely to expected production of low-cost iPhones.

WSJ: Apple Shifts Supply Chain Away From Foxconn to Pegatron

German sources attribute a 400, 000-tonne drop in coal production in May 1943 to the damage caused.

BBC: The Dambusters raid: How effective was it?