Newspapers report that Campbell Lumber Company building this mill on the railroad. In July 1896, the C. M. Lumber Company had shipped all of its machinery (except the planer) to the Switch. The tram to the river would be built then, its intent to let its machinery sit under sheds until worthwhile interest was shown in manufacturing. On May 17, 1902, C. M. Campbell Lumber Company contracted to sell a locomotive, about twenty log cars, and about eight miles of iron rails to San Jacinto Southern Railroad.
C. M. Lumber Company of Temple (A. F. Sharpe, vice president) was sold to J. I. Lumber Company of Houston and Lampasas for $15,000, in August and September 1902. The sale of August and September 1902 included a sawmill, a planing mill with five machines, boilers, an engine, all at San Jacinto Switch, all lumber on yard, the commissary and merchandise.
By 1905, J. I. Campbell was in receivership.