I just finished converting this OSHA course for the web. It applies to electrical construction since many underground installations require excavation and trenching. In 1963 I worked for 6 months on an excavation job working in 9 to 10 foot high trenches right next to heavy equipment without any shoring or shelving. We had several people get hurt on that job from cave ins. There was no OSHA until 1981 as I recall. I can understand the need for these rules as explained in this simple 31 slide presentation and hope that any of you involved in these types of projects review this material if you have not already done so. It might also save you from some serious and expensive OSHA citations. The course is at:
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