junglejim, sorry, didn't mean to take your statement out of context. I am down in medina county. I am sure a few people won't like the comment I am about to make, but here it goes..... Its starting to sound more and more like these guys may have had limited expirence in the excavation industry, carpenters are carpenters, laborers are laborers, not operators....now that said, nor am I. However, I have gained a great deal of knowledge growing up in the construction industry, and when you aren't 100% positive of what you are about to do, YOU DON'T DO IT, not on our jobs anyways. I will compair this incident to all the know-it-alls out there who think they can do their own wiring....and then they either get electricuted or burn their house down, and in the end....EVERYONE stands around and says 'why, why did it happen'. Why did it happen, because you didn't have a CLUE as to what you were doing.
I don't want to sound like a know it all either, I am young myself (18) but like they say, a man has to know his limitations. If you don't do excavating work EVERY day, you probably shouldn't be doing any such work without a professional(s) present to run the site. Again, I was not there, so anything is possible, but it just doesn't seem to me that a professional excavating contractor would do such a thing as putting a smaller machine down in the same hole they are digging. Again, my condolences, thoughts, and prayers to the families, friends, and neighbors of all involved....a very sad event.