PA-31 Navajo/Chieftan/Mojave/T1040
Air Traffic Control Fully Certified
Situational Awareness
ATC Issue All Types; Inflight Event / Encounter CFTT / CFIT
General None Reported / Taken
Procedure; Human Factors
Aircraft X departed VFR off EKO Airport and requested an IFR clearance. I was busy with bad rides; complex military holding; frequency congestion and gave the clearance to climb to 12;000 FT which was above the MIA aircraft at the time. About 5 minutes later; the MSAW alerted me to a 12;600 FT MIA polygon and I climbed the aircraft to 13;000 FT. The aircraft read back the clearance and climbed without incident. The aircraft had entered the 12;600 FT polygon before I gave the clearance to climb. A more thorough scan of my MIA polygons when I pulled them up to check for the clearance; would have alerted me to the problem.
ZLC Controller described a probable MIA infraction involving an EKO VFR departure requesting IFR. The reporter acknowledged that a more thorough scan of the MIA minimums on his part may have prevented the event.