ACFT LOST PWR ON THE LEFT ENG DURING CLIMB TO CRUISE APRX 8 MINUTES AFTER TAKEOFF. ARPT MGR HEARD UNICOM TRANSMISSION FROM N36CA, 'WE LOST AN ENG, WE'RE COMING BACK.' A WARNING HORN (POSSIBLY GEAR WARNING OR STALL HORN) WAS HEARD IN THE BACKGROUND OF THE TRANSMISSION. WHEN N36CA FAILED TO RETURN THE ARPT MGR CALLED THE SHERIFF & BEGAN SEARCH IN HIS OWN ACFT. N36CA WAS LOCATED APRX 1 HOUR AFTER IT'S DEPARTURE. THE FORCED LANDING WAS IN A FLAT, WINGS LEVEL ATTITUDE WITH 22DEGS OF FLAPS EXTENDED. INITIAL IMPACT OCCURRED IN AREA OF 8 FT HIGH BRUSH. DISTANCE FROM INITIAL IMPACT TO FINAL REST WAS 595 FT ON HEADING OF 140 DEGS. ALTHOUGH RESTRAINED BY LAP BELT AND HARNESS, PLT HIT HEAD ON CO-PLT'S CONTOL YOKE DURING THE ACCIDENT. THE LEFT ENG TURBINE BLADE HAD FAILED IN FATIGUE. THE PLT'S SON SAID HIS FATHER SHUT DOWN THE RIGHTENG IN-FLT AND AS A RESULT THE ACFT HAD NO PWR ON EITHER ENG.