What was found
FLYING A NORMAL APPROACH TO LANDING INTO DEADHORSE. AT THE FINAL APPROACH FIX JUST BEFORE DECENT I PULLED THE GEAR HANDLE DOWN. THE GEAR DID NOT EXTEND AND THE GEAR CIRCUIT BREAKER POPPED. I RESET THE BREAKER ONCE AND TRIED THE GEAR HANDLE AGAIN. GEAR FAILED TO EXTEND AND THE BREAKER POPPED AGAIN. I DECLARED AN EMERGENCY WITH ATC. I WENT MISSED AND PERFORMED THE APPROPRIATE CHECKLISTS IN THE HOLD MANUALLY PUMPING DOWN THE GEAR. ONCE COMPLETED I DID ANOTHER LOW APPROACH FOR VISUAL VERIFICATION OF GEAR STATUS GOING MISSED. I LANDED ON MY THIRD APPROACH WITHOUT INCIDENT.