Roof fall occurred in an intersection in the R-3 entry (Intake) of the 12-Butt off 2-Right Continuous Haulage Section approximately 310-feet outby the working face. The area had been supported using Jenmar 6-foot ""Suprtwist"" roof bolts with 8-inch x 8"" plates on 4-foot x 4-foot centers. No roof defects noted.