A new J&M Robovib has been sold in Alaska to drive sheets under a bridge. The Robovib was mounted to a 330B Cat excavator. An APE Model 150 fitted with a low headroom suppressor serves as the follow up hammer after Robvib picks the piles from the side and drives the sheets. The 150 has the ability to quickly adapt to low headroom situations. For more details call Larry or Dave at APE.