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Hydraulic Debarker
A hydraulic debarker is a machine removing bark from wooden logs by the use of water under a pressure of or greater. Hydraulic debarking can reduce soil and rock content of bark, but may increase the water content. Debarking water may be recycled after effective settling, but suspended solids may increase wear on high-pressure pumps. Hydraulic debarking has declined where water quality problems have arisen. History Bark on mature redwood trees of coastal California can vary from in thickness. Redwood bark is thick, stringy and tough; and can cause sawmill machinery to malfunction. Men called peelers removed bark from fallen trees in the woods through the early 20th century, but the process was dangerous and labor intensive. In the mid-20th century hydraulic barkers were built at several large sawmills including the Union Lumber Company at Fort Bragg, California, the Northern Redwood Company at Korbel, and the Pacific Lumber Company at Scotia, California. The last was featured ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bark (botany)
Bark is the outermost layers of stems and roots of woody plants. Plants with bark include trees, woody vines, and shrubs. Bark refers to all the tissues outside the vascular cambium and is a nontechnical term. It overlays the wood and consists of the inner bark and the outer bark. The inner bark, which in older stems is living tissue, includes the innermost layer of the periderm. The outer bark on older stems includes the dead tissue on the surface of the stems, along with parts of the outermost periderm and all the tissues on the outer side of the periderm. The outer bark on trees which lies external to the living periderm is also called the rhytidome. Products derived from bark include bark shingle siding and wall coverings, spices and other flavorings, tanbark for tannin, resin, latex, medicines, poisons, various hallucinogenic chemicals and cork. Bark has been used to make cloth, canoes, and ropes and used as a surface for paintings and map making. A number of plants a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scotia, California
Scotia, formerly known as Forestville until 1888, is a census-designated place in Humboldt County, California. It is located on the Eel River along U.S. Route 101, southeast of Fortuna and north of San Francisco. Scotia has a population of 850 ( 2010 census). Scotia is a company town founded by the Pacific Lumber Company (PALCO) to house workers for the lumber industry. The town was entirely owned by PALCO until 2008, following the corporation's declaration of bankruptcy. While it is home to hundreds of past or present lumber mill employees and their dependents, a process is underway to divide the homes into lots for sale. History Scotia was founded in 1863 as Forestville by the Pacific Lumber Company to house workers for its lumber industry operations in the area. The town was formed following the winter flood of 1861–1862; that flood level was not observed again until 1955. The Eel River crested at a gauge height of 72 feet (10.1 feet higher than 1955) on December 23, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Board Foot
The board foot or board-foot is a unit of measurement for the volume of lumber in the United States and Canada. It equals the volume of a length of a board, one foot wide and thick. Board foot can be abbreviated as FBM (for "foot, board measure"), BDFT, or BF. A thousand board feet can be abbreviated as MFBM, MBFT, or MBF. Similarly, a million board feet can be abbreviated as MMFBM, MMBFT, or MMBF. Until 1970s in Australia and New Zealand the terms super foot and superficial foot were used with the same meaning. One board foot equals: * 1 ft × 1 ft × 1 in * 12 in × 12 in × 1 in * 144 in3 * 1/12 ft3 * ≈ * ≈ * ≈ or steres * 1/1980 Petrograd Standard of board The board foot is used to measure rough lumber (before drying and planing with no adjustments) or planed/surfaced lumber. An example of planed lumber is softwood 2 × 4 lumber sold by large lumber retailers. The 2 × 4 is actually only , but the dimensions for the lumber when purchased wholesal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Suspended Solids
Total suspended solids (TSS) is the dry-weight of suspended particles, that are not dissolved, in a sample of water that can be trapped by a filter that is analyzed using a filtration apparatus known as sintered glass crucible. TSS is a water quality parameter used to assess the quality of a specimen of any type of water or water body, ocean water for example, or wastewater after treatment in a wastewater treatment plant. It is listed as a conventional pollutant in the U.S. Clean Water Act. Total dissolved solids is another parameter acquired through a separate analysis which is also used to determine water quality based on the total substances that are fully dissolved within the water, rather than undissolved suspended particles. TSS is also referred to using the terms total suspended matter (TSM) and suspended particulate matter (SPM). All three terms describe the same essential measurement. TSS was previously called non-filterable residue (NFR), but was changed to TSS because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biochemical Oxygen Demand
Biochemical oxygen demand (BOD) is the amount of dissolved oxygen (DO) needed (i.e. demanded) by aerobic biological organisms to break down organic material present in a given water sample at a certain temperature over a specific time period. The BOD value is most commonly expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20 °C and is often used as a surrogate of the degree of organic pollution of water. BOD reduction is used as a gauge of the effectiveness of wastewater treatment plants. BOD of wastewater effluents is used to indicate the short-term impact on the oxygen levels of the receiving water. BOD analysis is similar in function to chemical oxygen demand (COD) analysis, in that both measure the amount of organic compounds in water. However, COD analysis is less specific, since it measures everything that can be chemically oxidized, rather than just levels of biologically oxidized organic matter. Background Most natur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Environmental Protection Agency
The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on December 2, 1970, after Nixon signed an executive order. The order establishing the EPA was ratified by committee hearings in the House and Senate. The agency is led by its administrator, who is appointed by the president and approved by the Senate. The current administrator is Michael S. Regan. The EPA is not a Cabinet department, but the administrator is normally given cabinet rank. The EPA has its headquarters in Washington, D.C., regional offices for each of the agency's ten regions and 27 laboratories. The agency conducts environmental assessment, research, and education. It has the responsibility of maintaining and enforcing national standards under a variety of environmental laws, in consultation with state, tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Growth
An old-growth forestalso termed primary forest, virgin forest, late seral forest, primeval forest, or first-growth forestis a forest that has attained great age without significant disturbance (ecology), disturbance, and thereby exhibits unique ecological features, and might be classified as a climax community. The Food and Agriculture Organization of the United Nations defines primary forests as naturally regenerated forests of native tree species where there are no clearly visible indications of human activity and the ecological processes are not significantly disturbed. More than one-third (34 percent) of the world's forests are primary forests. Old-growth features include diverse tree-related structures that provide diverse wildlife habitat that increases the biodiversity of the forested ecosystem. Virgin or first-growth forests are old-growth forests that have never been logged. The concept of diverse tree structure includes multi-layered canopies and Canopy (biology), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debarking (lumber)
Debarking is the process of removing bark from wood. Traditional debarking is conducted in order to create a fence post or fence stake which would then go on to be pointed before being planted. Debarking can occur naturally during powerful tornadoes. Process Debarking generally involves the use of industrial machinery into which the log or stake is placed. These machines can be either stationary or portable. Generally they are powered by hydraulic motors but can also be driven by a power take-off. The log or stake is then pressed against blades or knives which remove the bark while the log is turned to ensure the removal of bark from all around the log. Debarking can also take place by hand, although this can be very time consuming and may not be suitable for large volumes. See also * Hydraulic debarker * Girdling Girdling, also called ring-barking, is the complete removal of the bark (consisting of cork cambium or "phellogen", phloem, cambium and sometimes going into the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Lumber Company
The Pacific Lumber Company, officially abbreviated PALCO, and also commonly known as PL, was one of California's major logging and sawmill operations, located 28 miles (45 km) south of Eureka and 244 miles (393 km) north of San Francisco. Begun in 1863, PALCO was carefully managed over most of the twentieth century by generations of the Simon J. Murphy, Sr. Family or managers chosen by the Murphys from 1905 through 1985. Primary operations existed in massive log storage and milling operations at the historic company town of Scotia, California, located adjacent to US 101 along the Eel River. Secondary mills were located in nearby Fortuna and Carlotta. PALCO had extensive timber holdings exceeding well over 200,000 acres (890 km²) in the Redwood and Douglas-Fir forests of Humboldt County. For generations, it was one of the largest private employers in the entire region, appropriately known as the Redwood Empire. The company was transformed into a wholly owned su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wooden Log
Logging is the process of cutting, processing, and moving trees to a location for transport. It may include skidding, on-site processing, and loading of trees or logs onto trucks or skeleton cars. Logging is the beginning of a supply chain that provides raw material for many products societies worldwide use for housing, construction, energy, and consumer paper products. Logging systems are also used to manage forests, reduce the risk of wildfires, and restore ecosystem functions, though their efficiency for these purposes has been challenged. In forestry, the term logging is sometimes used narrowly to describe the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard. In common usage, however, the term may cover a range of forestry or silviculture activities. Illegal logging refers to the harvesting, transportation, purchase, or sale of timber in violation of laws. The harvesting procedure itself may be illegal, includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korbel, Humboldt County, California
Korbel (formerly North Fork) is an unincorporated community in Humboldt County, California. It is located east-southeast of Blue Lake, at an elevation of 154 feet (47 m). The ZIP Code is 95550. History In 1881, the Korbel brothers, Antone, Frank, and Joseph Korbel of Sonoma County, California acquired the Arcata and Mad River Railroad. They extended the railroad up the North Fork Mad River, where they built the Humboldt Lumber Company sawmill in 1883 with a company town for worker housing. The sawmill was the first in Humboldt County to use a kiln for drying lumber. The town was originally called North Fork, but was renamed Korbel in 1891 with the arrival of the post office. The Korbel family sold their Mad River properties to the Northern Redwood Lumber Company in 1902. Rail passenger service ended in 1931. The sawmill closed in 1933, but was reopened in 1942. In 1956 Simpson Investment Company of Washington purchased the site. Rail connection with the Northw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Bragg, California
Fort Bragg, officially the City of Fort Bragg, is a city along the Pacific Coast of California along Shoreline Highway in Mendocino County. The city is west of Willits, at an elevation of . Its population was 6,983 at the 2020 census. Fort Bragg is a tourist destination because of its views of the Pacific Ocean. Among its notable points of interest are Glass Beach and the California Western Railroad (popularly known as the "Skunk Train"). A California Historical Landmark, Fort Bragg was founded in 1857 prior to the American Civil War as a military garrison rather than a fortification. It was named after army officer Braxton Bragg, who at the time had served the U.S. in the Mexican–American War (and would later serve in the Confederate Army during the Civil War). The city was later incorporated in 1889. History The area now known as Fort Bragg was home to Native Americans since before Western expansion, most of whom belong to the Pomo tribe. They historically were h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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