What 29 CFR 1910.265 requires (plain English)
29 CFR 1910.265 is a special-industry standard for sawmills, covering the process of converting logs into lumber and the mill environment around it. It begins with structural integrity: all buildings, docks, tramways, walkways, log dumps, and other structures must be designed, constructed, and maintained to support the imposed load in accordance with a safety factor, because sawmills handle heavy loads on elevated and spanning structures.
From there the standard addresses the mill's machinery and operations: guarding of saws (head saws, band saws, edgers, trimmers, resaws) and other equipment; the log haul, log deck, and carriage; safe handling and storage of logs and lumber; and mill layout and housekeeping. The saws are powerful and fast, logs are heavy and can roll or shift, and the combination produces the amputation, struck-by, and crushing injuries the standard is designed to prevent.
Like other special-industry standards, 1910.265 supplements the general-industry rules: general machine guarding (1910.212), lockout/tagout (1910.147), walking-working surfaces, and others still apply. The sawmill standard adds the industry-specific structural, machinery-guarding, and log-handling requirements that the general standards do not spell out for this setting.