Presentations Cranes and Derricks Provides an overview of cranes and derricks, 1926, subpart CC. Work Zone Safety Provides an overview of work zone safety. Concrete and Masonry Provides an overview of concrete and masonry work. Personal Protective Equipment Provides an overview of PPE, subpart E. Struck By/Caught Between Provides an overview of struck by and caught between hazards in the construction industry. Materials Handling Provides an overview of material handling in construction and is based on 1926, subpart H - Materials Handling, Storage, Use and Disposal. Excavation and Trenching Provides an overview of excavations and trenching hazards, subpart P. Training Resources and Materials Provides various training resources for the construction industry.