Who We Are

DFM was founded in 2003 by Patrick Dougherty to manufacture the Turbo Saw tree cutter with the vision of producing high quality equipment for land clearing, forestry, and mulching. We are a completely independent company. This allows us the freedom to rapidly advance product technology. Our innovations have advanced nearly every facet of the industry with many of our technical achievements being adopted as the new standard throughout the market.

A core value at DFM is, and always will be, customer service. We feel our obligation does not end when a unit is sold. That’s why every DFM attachment is proudly made in the USA using the highest quality components, and every attachment we produce comes with a guarantee of performance, safety, and ease of use.

Patrick Dougherty, CEO, Founder

About Mastodon

Mastodon Forestry Mulchers is a division of DFM devoted to providing the most discerning land clearing professionals with the pinnacle of performance and technology.

Mastodon products are built in house with every material and component selected to ensure lasting reliability. 

Mastodon attachments are serious tools produced with a meticulous attention to detail, providing the highest levels of production and durability.

​Owning a Mastodon Mulcher gives the ultimate edge in vegetation management.

Factory Information

Our 27,000sq manufacturing facility is located 35 miles west of Oklahoma City. This location utilizes the latest advancements in CNC based manufacturing processes. Not only ensuring extremely accurate tolerances, but guaranteeing complete product uniformity and quality control.

Our Process

Before each of our attachments reaches the hands of the end user the design must be proven worthy of our name, this involves hundreds of hours of prototype testing before production begins.  We start our design process with comprehensive stress analysis on the materials used, when one of our products has passed this phase of development it is shipped to an offsite location for real world torture testing. This involves our test operators spending months gathering data on real world problems that cannot be calculated on a computer. Any problem that may surface requires the unit to be brought back, and disassembled. The failure is identified and addressed and then the unit is sent back to the field for further testing.  Only when the product can hold up in to the most grueling offsite testing without any failures do we consider it production ready.  All of this is done with a singular goal in mind…to provide our customers with exceptional land clearing products