does any one here have experience with these excavator attachments? http://alpinecutter.com/en/products/rock-concrete-grinders.html My concerns center around the leverage and forces involved and the stick. The project involves tunneling, so much of the work be 15 feet above the floor. I have contacted Alpine and only received a automatic email response, so I am also concerned that the company may be going through some transitions as much of there work is, (was), in mining. Thanks ahead, Bob
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