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Meet the team

Don and Sheri Blackburn, Owners

Don and Sheri Blackburn

Don and Sheri Blackburn are the owners of Blackburn Cattle Co Inc and 307 Disposal LLC. They are high school sweethearts who have been married for over 30 years. They raised their 2 children in Douglas and just welcomed their first granddaughter into the family. Faith and then family are their top priorities in life. Don and Sheri are involved in the Douglas community. Don serves as chairman of the Converse County Fair Board, Sheri volunteers her time with the Ambassador program at Memorial Hospital of Converse County, and they both are actively involved in their church. Don and Sheri share a love for travel. Their favorite vacation is anywhere that has a warm, sandy beach, rolling waves, and gorgeous sunsets!

Ashlie G., Administration/ Disposal Dispatcher

Ashlie Gray

Administration/ Disposal Dispatcher
Ashlie joined 307 Disposal LLC in September of 2020.  She graduated from the University of Alaska, when she came back to Wyoming and started out in the field and made her way into the office. Her favorite part of working with 307 Disposal is meeting and working with all the potential/current customers, along with her dedicated drivers and family business. When not in the office you can find her working out at the ranch with her husband.

Kendra, Office


Kendra started working for Blackburn Cattle Co. Inc. and 307 Disposal in February of 2022. She has a Bachelor’s degree in Agriculture Business and Animal Science. On her days off, she enjoys being in the outdoors doing various activities such as ranching, hunting, fishing, camping, and many more. Kendra enjoys meeting and talking to new people, so stop in at the office with any questions!
Michael S., Disposal Specialist

Michael Stewart

Disposal Specialist
Mike joined 307 Disposal LLC in November of 2021. He is always happy to help and brings a smile everywhere he goes. His favorite part of working with 307 Disposal LLC is the never-ending excursion wherever he is sent. In his free time, he enjoys going to shoot guns and ride motorcycles. We are proud to have him!



Shane started with 307 Disposal, LLC in September of 2022. He services the Casper area for us and does a fantastic job. He is originally from Florida and moved here in 2016. He feels like Wyoming is the place he always should have been. In his spare time, Shane and his wife are in the process of building a homestead from the ground up. He also enjoys working on his jeep he calls The Rooster. We are proud to have him on our team!

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Emergency After Hours Number



Monday 8:00 am - 4:00 pm
Tuesday 8:00 am - 4:00 pm
Wednesday 8:00 am - 4:00 pm
Thursday 8:00 am - 4:00 pm
Friday 8:00 am - 4:00 pm
Saturday Closed
Sunday Closed

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