Here is a great bunch of photos of the newest J&M 416 on the job. The 416 was taken directly from the factory without a power unit. The hammer was mated to an APE Model 330 power unit that was on hand as a spare. The system worked perfectly. The 416 is driving 60" diameter caising 30' long. A unique part of the system is that the casing is split in order to retrieve it after a 95' tall structure is placed in the hole.
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