Oct 14, 2009. /Lesprom Network/. Trinity River Lumber Co. has started processing logs at the Siller Brothers Sound Stud Mill in Anderson, Calif., which it is leasing on a month-to-month basis, as The Redding Record-Searchlight reported. Trinity River's sawmill in Weaverville, Calif., was destroyed by a fire September 12. The company plans to rebuild in Weaverville after insurance arrangements are completed. The Anderson mill is producing a small percentage of the volume that had been produced in Weaverville, mostly in short lengths.