Complex sentence: In 1863 Carson formed the Dolbeer and Carson Lumber Company, in partnership with John Dolbeer, who would invent the Steam Donkey Engine in 1881 and revolutionize logging technology, especially in hard to reach areas.
Split into simpler sentences: In 1863 Carson and John Dolbeer formed the Dolbeer and Carson Lumber Company. Eighteen years later in 1881, as the company advanced into harder to log areas Dolbeer invented the Steam Donkey Engine which revolutionized log removal especially in hard to reach areas.