DUST SYSTEMS REPAIRMAN WAS WALKING FROM BAGHOUSE TO MAINT. SHOP ALONG THE ROADWAY EAST OF THE SHOP. AT THE SAME TIME A SMALL PICKUP TRUCK WAS BACKING AWAY FROM THE FOREMAN'S OFFICE AS HE WAS W ALKING WITH HEAD DOWN. WHEN HE STEPPED OUT FROM AROUND A VAC TRUCK HE WAS STRUCK BY THE PICKUP & KNOCKED DOWN. CONTUSIONS TO LEFT LEG, RIGHT HIP & SHOULDER; NO FRACTURES FROM X-RAY. RESTRICTE