Portable sawmills are sawmills small enough to be moved easily and set up in the field. They have existed for over years but wood mize make money sawing old beams in popularity in the United States starting in the s, when the oil crisis and the back-to-the-land movement had led to renewed interest in small woodlots and in self-sufficiency. Their popularity has grown exponentially sincewhen the portable bandsaw mill was first commercialized. Arguably, as once used in early Canadian forest logging, the donkey engine was one of the earliest portable sawmills. It was used to winch and haul log booms across lakes and water, then winch itself across land or water to its next site, and finally it would be reconfigured to run a saw to mill the timber. The first dedicated portable sawmills were typified by the «One Man Farmer’s Sawmills» that featured large circular blades and were marketed during the early twentieth century by companies like Sears, Montgomery Ward and JC Penney....