When pipe sections are to be hoisted into the trench for placement what would be your recommendations: Select all that apply. Workers cannot be inside the trench box nor beneath the load Workers can be in the box but not beneath the load Use taglines to help control Have a ground guide using signals and radio communication to the operator to help with placement Utilize a second trench box ahead of the box where work is conducted to protect workers behind box struts in case load is dropped or fails