The Sugar Pine Lumber Company was an early 20th century logging operation and railroad in the Sierra Nevada. Unable to secure water rights to build a log flume, the company operated the “crookedest railroad ever built." They later developed the Minarets-type locomotive, the largest and most powerful saddle tank locomotive ever made. The company was also a pioneer in the electrification of logging where newly plentiful hydroelectric power replaced the widespread use of steam engines.