1701 38th Avenue West
Spencer, IA 51301
(712) 339-1290

The Ground Effect lineup of products are manufactured and assembled in our Simonsen Iron Works plant in Spencer, IA. We don't just manufacture our own products, we manufacture a variety of products for many known brands.

State-of-the-Art Manufacturing

Established in 1906, Simonsen Iron Works is a fully integrated, state-of-the-art, advanced manufacturing operation located in Spencer Iowa.  Simonsen specializes in...

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Our Ground Effect Soil Finisher is built to handle the toughest work on the job site or the farm. The Soil Finisher is perfect for horse arenas, new construction soil finishing, and landscaping or seed be preparation. You can even level out gravel and dirt for parking lots, baseball diamonds, or other high traffic track areas with uneven terrain.

The Soil Finisher works with a variety of attachments, including most...

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The Ground Effect Vegetation and Sod Cutter is one of our newest products and is quickly becoming a leader out in the field. This new addition to the Ground Effect lineup doesn’t take external power, has mounts for many equipment types, and is easy to operate.

It undercuts vegetation from construction sites or cuts traditional sod for resale or removal with your skid steer or 3-Point tractor. The Vegetation and Sod...

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At Ground Effect, we saw a need for a premium edger built for the toughest sidewalk and curb jobs. It was developed to save on man hours and complete concrete work quickly by limiting shovel work. For new construction or new pours, the Sidewalk and Curb Edger grades dirt directly to the pour, which works with a combination of attachments.

Blades are angular adjustable and come with a horizontal gauge wheel that...

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1701 38th Avenue West
Spencer, IA 51301
(712) 339-1290