The portable sawmill is constructed on a frame having a series of mechanisms for loading and manipulating a log thereon and removing boards cut from the log. Powered tines load a log onto a vertically adjustable log deck, the deck including powered mechanisms for turning and securing the log in the desired orientation for cutting. Cuts are made by a horizontally traveling band saw. The saw has no vertical adjustment. Board thickness is determined by the height of the vertically adjustable log deck. Cut boards are removed by a board sweep that pushes the board laterally from the top of the log onto a tray. The saw travels along the tray to push the board longitudinally onto a suitable platform for transport. All of the above mechanisms are controlled hydraulically from a single operator station on the mill, thus freeing the operator from many manual tasks and increasing production.