Unintentional roof fall discovered this date. Fall location: 2 Lt section, 27 break, 7 entry, inby stations 4315 and 4342. Area mined on or about 3-21-06. Fall measured approx. 36'L X 18'W X 8'H. Previously supported with 6' resin grout roof bolts and 10' cable bolts. Overburden approximately 260'.