From the Rapid City Business Journal –
RAPID CITY, S.D. — Ketel Thorstenson, LLP, the largest accounting firm in the Black Hills, will merge with Casper-based Grooms & Harkins, P.C., in a strategic partnership set to take effect Jan. 1, 2026. The move expands KT’s service reach across South Dakota and Wyoming while strengthening both firms’ longstanding
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