A roof fall was discovered at 3 Mains Section, 53 Crosscut, 10 to 11 Crosscut only. 9' high, 17' wide, 20' long. 6' super twist and 6' fully grouted resin bolts were in use. This fall was 2,600' out-by the mains section. No men or machines were injured or trapped. No ventilation or travel were affected.