THA has the equipment and the experience to do the job right, regardless of your land improvement and drainage needs. We utilize big mechanical rigs, and use the latest in technological advances to ensure that your job gets done right the first time, every time.
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We are a full service company. You will always receive high quality and professional service with THA Demolition and Excavation.
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Click the button below to request a quote of our services.
We take pride in offering our customers the type of personalized attention that they deserve.
THA Demolition & Excavation offers a full host of land improvement services including drainage, sub-irrigation, demolition and excavation.
Our manager, Randy Namminga, has over 16 years experience and attended Ohio State’s drainage school to further his education about water management structures and design. You can rest assured that when you hire THA to tackle your project, your land is in good hands.
"I have hired THA Demolition & Excavation to do a number of tile and excavation projects for me on our farms in Lincoln County, South Dakota. Whether large job or small, Randy Nammenga and his team arrive on site and complete the project, ON SCHEDULE. The work is performed quickly, thoroughly, and conscientiously. Randy meticulously engineers and installs each drainage system he designs. If THA installs a drainage system, IT WORKS!"
- Bill Haugen, Landowner
Our Services
COMMERCIAL GPS FIELD TILING
We use the latest in modern technology to ensure that your field drains efficiently and effectively and that the job gets done right the first time. Using GPS (Global Positioning System) technology, we can design your drain tile with the optimal slope for maximum drainage and benefit for your field. Trust the professionals with your investment!
SUB-IRRIGATION SYSTEMS
​Tired of the upkeep associated with traditional irrigation systems? Get rid of the old irrigation rigs in favor of a sub-irrigation system that keeps your crops well-nourished through the soil. Moving around irrigation rigs and dodging them when you're out in the field is a thing of the past!
SITE PREPARATION SERVICES
Got a big project coming up? Building a new barn? Maybe a new shop? We can prepare the site for you so the ground is level and ready to build on. We have the machinery necessary to ensure that your site is professionally prepared. Don't risk problems down the line by building on uneven ground - let us get your site ready for construction.
LAND RECLAIMATION
Why purchase new land when you can reclaim the land you already own? Want to turn that old stock dam into more cropland? Is there a slough on your land that you'd like to get rid of? We have the experience and equipment to help you take full advantage of every single inch of your land.
DITCH CLEANING
Let us clean out and re-shape your irrigation ditches to ensure that water flows away from your property effectively. Our ditch cleaning experts will take care of your ditches and we'll even haul away any excess dirt and debris. Make sure your ditches are draining properly: hire THA to clean your ditches!
DEMOLITION SERVICES
​If you need it knocked down, ripped up and taken off your property - we're just the team to do it! With several years of demolition experience and machinery to tackle any job, THA will handle your demolition efficienty and professionally. After all, demolition is a big part of our name. Give us a call today if you're in the market for full-service demolition.
Our TEAM
Randy Namminga - Manager
Stacey Namming - Business Manager
Troy Bartles
Subcontractor
Dale Bartles
Business Associate
Safety Coordinator
Doyle Fischer
Shop Manager
Jeff Grosky
Equipment Operator
Hal Schroeder
Equipment Operator
