Case in point of a contractor working "in a covered Process"...AMMONIA LEAK caused by FALL from LADDER 2 injured in ammonia leak in Norfolk (two people were injured in an ammonia leak - a Level 2 hazard - a hazmat team went into the building and secured the leak - employees reported a worker on a ladder fell and struck a pipe that leads to tank containing ammonia - not immediately clear what injuries the workers sustained, but two employees were taken to the hospital - one worker had been released by 1:30 p.m. the other was hospitalized with non life-threatening injuries - no evacuations were needed)