DURING LANDING ROLLOUT ON RUNWAY 34L THE PILOT REPORTED THAT HIS AIRPLANE BEGAN 'FISH TAILING', AND HE LOST CONTROL. THE AIRPLANE VEERED OFF THE 150 FOOT WIDE BY 10,002 FOOT LONG RUNWAY AND COLLIDED WITH A BERM. NINETEEN MINUTES LATER THE TOWER REPORTED THE LOCAL WIND WAS FROM 300 DEGREES, AT 16 KNOTS. ACCORDING TO THE FAA, NO MECHANICAL DISCREPANCIES WERE FOUND WITH THE AIRPLANE.