EE WAS USING A TORCH TO CUT PART OF A BLDG. STRUCTURE FOR REMOVAL PURPOSES. AS HE CUT THE FIRST END OF A BEAM, THE BEAM MOVED, WHICH CAUSED EE TO LOSE HIS BALANCE. THIS CAUSED HIM TO FALL & STRIKE HIS KNEE INTO A SECTION OF HANDRAIL. EE HAD HIS SAFETY HARNESS ON WHICH PREVENTED HIM FROM FALLING FURTHER.