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A fire fighter will rake burning material back into the (black) area already burned, moving the fire away from the fuel ahead of it to create a fire break. The burning material is left to burn itself out away from the edge of the fire line, or another fire fighter with a fire flapper will smother it if required. The tool will cut through any ...
A stump grinder is a machine designed to remove tree stumps by using a rotating cutting disc that chips away the wood. The machine typically features a cutter wheel with fixed carbide teeth. The cutter wheel's movements are controlled by hydraulic cylinders , which allow it to move laterally and vertically to grind through the stump.
A backfire is a more aggressive type of burning done to influence the behavior of the main fire. In forest and prairie management, the driptorch is the most common tool used to ignite prescribed burns, which are used to remove excess fuel buildup or to re-create natural cycles of fire in an ecosystem .
A McLeod tool (or rakehoe) is a two-sided blade — one a rake with coarse tines, one a flat sharpened hoe — on a long wooden handle. It is a standard [1] tool during wildfire suppression and trail restoration. [2] The combination tool was created in 1905 by Malcolm McLeod, a United States Forest Service ranger at the Sierra National Forest ...
The stump is the base of the trunk and the attached woody roots. Tree stumps and roots are extracted using a hydraulic head on a tracked excavator or with a mechanical head equipped by a special tool for tractors. Stump harvesting is expected to provide an increasing component of the woody material required by the woody biomass power sector in ...
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Tree stump, about 37 years after falling. After a tree has been cut and has fallen, the stump or tree stump is usually a small remaining portion of the trunk with the roots still in the ground. Stumps may show the age-defining rings of a tree. The study of these rings is known as dendrochronology. Stump sculpture by German artist Eberhard Bosslet
Many different sugars are used as the fuel for rocket candy. The most common fuel is typically sucrose, however, glucose and fructose are sometimes used. As an alternative, sorbitol, a sugar alcohol commonly used as a sweetener in food, produces a propellant with a slower burn rate and is less brittle when made into propellant grains. [5]