Roof fall was discovered by examiner at approx 2:15. He then contacted the RP who traveled to the location 1st NW Mains between XC#126-127,spad #104+37 to 105+27. Once the RP arrived investigated the fall, collected the information needed for the questions ask per MSHA. He contacted outside to make the call at 2:40.Approx Length 35',Width 19',Height unknown.