For Employees do you:

Enforce the use of safety shoes, hard hats, hearing protection, gloves, and eye protection?
Have employees work in pairs?  Post an observer at the top of the trench?
Provide traffic control training?  Dress signalers in bright, reflective clothing?
Train workers in laser use?  Ensure that laser equipment is properly used?

For Pre-Job do you:

Consult utilities before digging?  Pre-mark all utility lines?
Conduct pre- and post-excavation topographical reviews for drainage conditions?
Inspect foundations/structures in the vicinity and record/photograph defects?

For Operations do you:

Keep equipment away from overhead wires?
Pile excavated material a safe distance from the trench's edge?  Properly slope?
Use proper sloping techniques or appropriate retention systems?
Remove dirt and debris from streets/sidewalks to help prevent public injury?
Barricade all excavations?  Cover trenches at night?  Detour when necessary?
Have accessible entry/exit (ladders, etc. ) within 25 feet from any worker?
Control dust, fumes, and vapors?  Burn brush in controlled areas?
Use signalers when dump trucks are discharging their loads?
Advise fire department of chemicals, combustibles, and blasting materials?

Test water lines for leaking joints, rate of flow, etc.?
Use licensed blasters? Train workers in proper explosives handling/storage?
Secure/remove blasting materials from jobsite daily?  Keep accurate inventories?

Keep torches attended?  Use fireproof mats, fire extinguishers and watch persons(s)?
Restrict welding near flammables or before lines are properly purged?
Use approved oxygen, acetylene and LPG cylinders?  Secured/stored properly?

For Equipment do you:

Operate equipment a safe distance from excavation to help avoid collapse?
Equip bulldozers and loaders with rollover protection and overhead canopies?
Provide equipment with automatic audible back up alarms?
Ground portable electric power generators if over 5 KW?