The first bulldozers were adapted from Holt farm tractors that were used to plow fields. There are many tractors on the fields that plow the dirt. The bulldozer kept moving, and she slipped and fell off the plow. The plow and winch were then detached for use on another train. Police broke the barricade on the bridge using a snow plow. Snow pinned Douglas following a "Snow Plow". This may involve the use of a chisel plow, field cultivators, or other implements. There are varying versions of the inspiration for Deere's famous steel plow. One person died after being struck by a snow plow. In 1837, Deere developed and manufactured the first commercially successful cast-steel plow. They find several large holes and Cornfield Clem riding a large farming plow. A man was killed after being struck by a snow plow in Beltsville, Maryland. The M1 can be equipped with mine plow and mine roller attachments. Technology is advancing towards driverless machinery programmed by GPS to spread fertilizer or plow land. They will work, they will plow, they will reap.