Holey-Moley Digger Products Partner


We are proud to present Keene Engineering as a Holey-Moley Digger Products Partner. Keene Engineering manufactures of our Portable Engine Driven Shop Vacuum System.  This system is used to power the our Digger in remote locations.

Holey-Moley Digger Products Partner

















Engine Driven Vacuum System

Our Portable Engine Driven Shop Vacuum System was developed by Keene Engineering.  It was designed for dry gold dredging. The system fits on top of a 5 gallon bucket with an easy on-off screw lid.  The unit is powered by a high quality Makita 4-Cycle Gas Engine. The engine can run all day on one gallon of gas. This system works both as a blower or as a vacuum. Weighing in at 19 lbs this portable system is a perfect choice for the Holey-Moley Digger for digging holes where electricity is not available. The light weight vacuum system is easy to carry on a back pack to remote areas.

High Flow Rate

The Portable Engine Driven Shop Vacuum System operates at an air flow rates of 365 CFM. This air flow rate outperforms all available home shop vacuums by a factor of two or more.   This system in combination with the 3-inch suction hose makes it the best choice for operating the Holey-Moley Digger Assembly.

Outdoor Vacuum System

The Portable Engine Driven Shop Vacuum System can be used for vacuuming up sand and gravel and cleaning up areas around holes dug with the Holey-Moley Digger.  It is ideal for vacuuming up loose dirt when replacing plants in landscaping and for doing paver and brick work.

Portable Engine Driven Shop Vacuum System
Portable Engine Driven Shop Vacuum System


The Engine Drive Shop Vacuum is ideally suited for powering the Holey-Moley Digger. The unit produces super cyclonic airflow flow rates in the Holey-Moley digger head.  This high flow rate increases the dirt particle extraction efficiency of the unit.  Air flow velocities in excess of several hundred miles per hour are common.  The Portable Engine Drive Shop Vacuum is highly recommended as the vacuum unit for the Holey-Moley Digger.

Keene Engineering Carries a full line of Holey-Moley Digger Products

Keene Engineering, a Holey-Moley Digger Products Partner,  carries a full line of Holey-Moley Digger products. These products include our Holey-Moley Digger, and the Holey-Moley Reamer.  Keene Engineering also carries our our 8-inch Cache Tube Kit and  6-Inch Cache Tube Kit.  Both kits contain an internal pipe plug for a water tight seal.  In addition, Keene carries our unique 6-Inch Cache Tube Kit with a threaded end cap and custom O-Ring seal.

Dry Dredging Innovations

Keene Engineering is innovative in the gold dredge industry pioneering new products in the dry dredging arena.   The Holey-Moley Digger is one of these products suitable for boring test holes.  Holes as deep as 15 to 20 feet deep are common for penetrating soil layers to reach and sample underlying gold bearing gravel.

Contact information for Keene Engineering our Holey-Moley Digger Products Partner:

Keene Engineering
8940 Lurline Ave
Chatsworth, CA 91311

Phone: 1-800-392-4653
Fax:    818-993-0447