Mobile Drilling Incorporated is still in business today. The Dispatcher Summer 2025 edition has a story on the Jeep-A-Drill. Matt Amos and Scott Sperling of Richmond, IN, have obtained and restored a Model 100-A unit.
History
Scott provided us with this history: It is believed that Phend & Brown Construction in Milford, Indiana, bought this Mobile Drill Model 100-A new from Indianapolis, Indiana. At the time, the jeep was used to sample potential borrow pits for road construction projects around the state. Over the years, it was used less and less as they opted to mobilize an excavator to investigate the soil. One of the Brown boys drilled the last holes in October of 2022 for an overpass job they bid and built. Basically…. nobody else knew how to run it.
Unfortunately, an engine fire occurred years later. It sat outside until Reith-Riley Construction bought Phend & Brown. It was determined to dispose of the jeep and send it to auction. Matt and Scott bought it back on December 5. 2025. They proceeded to refurbish this hard-to-find, Indiana homegrown piece of Jeep Equipment.
The restoration process soon began.
Matt and Scott displayed the restored Jeep at the 2026 Willys Jeep Rally. Here are a few photos and Scott’s descriptions.
PIC 1: A belt-driven hydraulic pump (rated at 2000 PSI/25 GPM) is located on the driver’s side. It’s used to operate the large (red) hydraulic cylinder (rear) to raise and lower augers. The PTO driven gearbox turns the augers to dig. We did receive the complete Accessory Package Unit in our purchase.
PIC 2: Pictured are a few of the accessories we received with our JEEP-A-DRILL. A description of each accessory and its use is explained in the following attachment.
PIC 3: The business end of this unit. We received 10 – 4″ dia. 5′ auger sections. The control panel is located to the right. The black knob is a manual throttle control connected directly to the carb. It can be locked in position by turning the handle when additional RPM’s are needed.
PIC 4: The yellow handle right above the rear passenger tire is cable-operated and is connected to the clutch pedal underneath.
Additional instructions and documentation follow.
In addition to traditional advertising, Scott found this:
Thanks to Dave Eliers and Scott Sperling for providing these documents.