Cal-Portland Cement Company is a large industrial company that blasts limestone for the process of making cement.  During its construction of the H-4 Tower a contractor was working several hundred feet without the proper safety equipment and he slipped and fell to his death, many witnesses saw the event. The floor in which he fell was off of 2b and even now employees witness shadows and hear voices and unexplained doors slamming along the Tower, activity is more frequent at night.

On the other side of the plant is the shipping department where the cement is kept in silos before being shipped off to various places. During the construction of these silos a contractor was killed around silo 44, nature of the death is speculated to where he might have fallen in from the top or was crushed underneath.. Employees on that side of the plant have experienced everything from sightings of a worker in a yellow hardhat and flanel clothing, unexplained equipment being shut-off, objects being thrown, voices coming from underneath the silos, shadows, and uneasy feelings of being watched while under the silos or around the area