Excavation Safety

Excavation Trenching & Shoring	Virginia Tech's Excavation Trenching & Shoring Program
Soil Nailing of Excavations: An Introduction to Design	Links to Soil Nailing Design Considerations
Trenching and Excavation - Ohio State University	Ohio State University Extension - Trenching and Excavation: Safety Principles - Several good links.
Trench Safety - A Tutorial for Constructors	Excellent Site from Auburn University
Worksafe Western Australia	Code of Practice: Excavation

'TIA Safety Links
'Tis Another Irishman