Cover photo for Casey Duane Gross's Obituary
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1961 Casey 2021

Casey Duane Gross

June 10, 1961 — October 19, 2021

Casey Duane Gross, 60, of Gillette, WY passed away on October 19, 2021 at Campbell County Memorial Hospital after a struggle with ALS (Lou Gehrig’s disease). He was born on June 10, 1961 in Belle Fourche, SD to David and Vonnie Gross and grew up on a ranch south of Ekalaka, MT in the Belltower Community. As a child, you would often find him tending to his lambs and setting small game traps. He graduated from Carter County High School in 1979, excelling in athletics including football, basketball, and baseball. Casey moved to Gillette, WY in 1981 and married his high school sweetheart, Ronda, the following year. They have three amazing children together, Ryan, Sarah, and Matt, with their marriage ending in 1997. He spent his later years with Wesann, never missing a good morning or goodnight text.

Casey cherished the lifelong friends he made throughout his career with Fairmont Supply and then as the Purchasing Supervisor at Black Thunder Mine. He was hard working, competitive, selfless, and the first to lend a helping hand. Casey spent every free moment with his kids playing board games, cards, sports, riding horses, and cheering them on in their various activities. He loved spending time in the Big Horn Mountains where he had a passion for hunting, fishing, camping, and riding atvs. He also excelled at competitive cornhole and enjoyed giving back to the youth of the community by officiating basketball. Regardless of the activity, he was rarely without a Diet Coke and sweet treat in his hand. He especially enjoyed spoiling his grandkids and spending as much time as possible with them.

Casey was a loving father, grandfather, son, brother, and friend. He always had a smile on his face and never ran out of his “dad quotes”, jokes, and family sayings. Casey will be missed immensely and is survived by his three children, Ryan (Kristin) Gross and their children, Kylie, Connor, Lauryn, and Landon of Gillette, WY; Sarah (Chris) Vogl and their children, Frazier and Lennyn of Mitchell, SD; Matt Gross of Gillette, WY; partner and friend, Wesann Brown of Gillette, WY; mother, Vonnie Gross of Gillette, WY; brother, Steve (Leann) Gross of Gillette, WY; sister, Shelley (Kevin) Rehbein of Moorcroft, WY and numerous nieces, nephews, aunts, uncles, and cousins. Casey is preceded in death by his father, David Gross.

With a lifelong love of wildlife and the outdoors, Casey would appreciate donations in his name to the Rocky Mountain Elk Foundation at ​​ or the Wyoming Sportsman’s Group at in lieu of flowers.  Memorials and condolences may also be sent in care of Gillette Memorial Chapel, 210 West 5th Street, Gillette, WY 82716.Condoelnces may also be expressed at

Mass of Christian Burial for Casey will be held at 11:00 a.m., Friday, October 29, 2021 at St. Matthew's Catholic Church with Father Cliff Jacobson officiating; interment to follow at Mt. Pisgah Cemetery, with a luncheon thereafter. Visitation will be held from 4:00 p.m. to 6:00 p.m., Thursday, October 28, 2021 at Gillette Memorial Chapel.  A time for public sharing to begin at 5:00 p.m. with the Vigil at 6:00 p.m.

To order memorial trees or send flowers to the family in memory of Casey Duane Gross, please visit our flower store.

Service Schedule

Past Services


Thursday, October 28, 2021

4:00 - 6:00 pm (Mountain time)

Gillette Memorial Chapel

210 W 5th St, Gillette, WY 82716

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Funeral Service

Friday, October 29, 2021

Starts at 11:00 am (Mountain time)

St. Matthew's Catholic Church

900 Butler-Spaeth Rd, Gillette, WY 82716

Enter your phone number above to have directions sent via text. Standard text messaging rates apply.


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