|
|
|
|
Grain elevator
|
| |
|
| |
Grain elevators are buildings or complexes of buildings for storage and shipment of grain.
Discussion
Ask a question about 'Grain elevator' Start a new discussion about 'Grain elevator' Answer questions from other users |
Encyclopedia
Grain elevators are buildings or complexes of buildings for storage and shipment of grain. They were invented in 1842 in Buffalo, New York, by Joseph Dart, who first developed a steam-powered mechanism, called a marine leg, for scooping grain out of the hulls of ships directly into storage silos. Older grain elevators and bins often were constructed of framed or cribbed wood and were prone to fire. Grain elevator bins, tanks and silos are now usually constructed of steel or reinforced concrete. Bucket elevators are used to lift grain to a distributor or consignor where it flows by gravity through spouts or conveyors and into one of a number of bins, silos or tanks in a facility. When desired, the elevator's silos, bins and tanks are then emptied by gravity flow, sweep augers and conveyors. As grain is emptied from the elevator's bins, tanks and silos it is conveyed, blended and weighted into trucks, railroad cars, or barges and shipped to end users of grains (mills, ethanol plants, etc.).
Prior to the advent of the grain elevator, grain was handled in bags rather than in bulk.
History
Grain elevators are a common sight in the grain-growing areas of the world, such as the North American prairies. Larger terminal elevators are found at distribution centers, such as Chicago and Thunder Bay, Ontario, where grain is sent for processing, or loaded aboard trains or ships to go further afield.
Buffalo, New York, the world's largest grain port, during the first half of the 20th century, had the nation's largest capacity for the storage of grain in over thirty concrete grain elevators located along the inner and outer harbors. Many of those that remain are presently idle, but a new ethanol plant started in 2007 will use some of the elevators to store corn. In the early 20th century, Buffalo's grain elevators inspired modernist architects such as Le Corbusier, who exclaimed, "The first fruits of the new age!" when he first saw them. Buffalo's grain elevators have been documented for the Historic American Engineering Record and added to the National Register of Historic Places. Currently, Enid, Oklahoma, holds the title of most grain storage capacity in the United States.
In farming communities, each town had one or more small grain elevators that would serve the local growers. The classic grain elevator was constructed with wooden cribbing and had nine or more larger square or rectangular bins arranged in 3 × 3 or 3 × 4 or 4 × 4 or more patterns. Wooden cribbed elevators usually had a driveway with truck scale and office on one side, a rail line on the other side and additional grain storage annex bins on either side.
In more recent times with improved transportation, centralized and much larger elevators serve many farms. Some of them are quite large. Two elevators in Kansas (one in Hutchinson and one in Wichita) are half a mile long. The loss of the grain elevators from small towns is often considered a great change in their identity, and there are efforts to preserve them as heritage structures. At the same time, many larger grain farms have their own grain handling facilities for storage and loading onto trucks.
Grain elevator operators buy grain from farmers, either for cash or at a contracted price, and then sell futures contracts for the same quantity of grain, usually each day. They profit through the narrowing basis, that is, the difference between the local cash price, and the futures price, that occurs at certain times of the year.
Before economical truck transportation was available, grain elevator operators would sometimes use their purchasing power to control prices. This was especially easy since farmers often had only one elevator that was within a reasonable distance of their farm. This led some governments to take over the administration of grain elevators. An example of this is the Saskatchewan Wheat Pool. For the same reason, many elevators were purchased by cooperatives.
A recent problem with grain elevators is the need to provide separate storage for ordinary and genetically modified grain to reduce the risk of accidental mixing of the two.
An interesting problem the old elevators had was that of silo explosions. Fine powder from the millions of grains passing through the facility would accumulate and mix with the oxygen in the air. A spark could spread from one floating grain to the other creating a chain reaction that would destroy the entire structure. (This dispersed-fuel explosion is the mechanism behind fuel-air bombs.) To prevent this, elevators have very rigorous rules against smoking or any other open flame. Many elevators also have various devices installed to maximize ventilation, safeguards against overheating in belt conveyors, legs, bearing, and explosion-proof electrical devices such as electric motors, switches and lighting.
Grain elevators in small Canadian communities often had the name of the community painted on two sides of the elevator in large block letters, with the name of the elevator operator emblazoned on the other two sides. This made identification of the community easier for rail operators (and, incidentally, for lost drivers and pilots). The old community name would often remain on an elevator long after the town had either disappeared or been amalgamated into another community; the grain elevator at Ellerslie, Alberta, remained marked with its old community name until it was demolished, which took place more than twenty years after the village had been annexed by the City of Edmonton.
Elevator row
An elevator row is a row of more than three grain elevators hence "elevator row".
In Canada
In the early days of Canada's Prairie towns, many once boasted dozens of elevator companies all in a row. When there was a good farming spot being settled, many people wanted to make some money by building their own grain elevators, bringing many private grain companies. With so much competition, almost immediately, consolidation began and many small companies were merged or absorbed. In many elevator rows there would be two elevators of the same company. Small towns bragged of their large elevator rows in promotional pamphlets to attract settlers. If a town was lucky enough to have two railways, it was to be known as the next Montreal. With the cost of grain in the 1990s so low many private elevator companies once again had to merge causing many of the "prairie sentinels" to be torn down. Because so many grain elevators have been torn down, Canada only has two surviving elevator rows, one located in Warner, Alberta, and the other in Inglis, Manitoba, making them the last surviving "elevator rows" in Canada.
See also
Elevator companies
Canada
United States
Notable grain elevators
During the Battle of Stalingrad, one particularly well-defended Soviet strong point was known simply as "the Grain Elevator" and was strategically important to both sides.
Canada
- Canadian Grain Elevator Discovery Centre
- Dawson Creek, British Columbia, has a grain elevator that was turned into an art gallery.
- Fleming, Saskatchewan, is home to the oldest standing grain elevator on its original site in Canada. The Fleming Grain Elevator was built in 1895 and maintains many of its original features.
- Indian Head, Saskatchewan, grain elevator turned into a Café coffee house.
- Inglis elevator row, is home of the last surviving elevator row in Manitoba and is designated a National Historic Site of Canada.
- Niverville, Manitoba, was home to Western Canada's first grain elevator, erected by William Hespeler in 1879
- Raley, Alberta, is home of the oldest standing elevator in Alberta.
- Warner elevator row, is home of the last surviving elevator row in Alberta.
United States
- Armour's Warehouse, constructed in 1861–62 on the north bank of the Illinois-Michigan Canal in Seneca, Illinois.
- Baltimore and Ohio Locust Point Grain Terminal Elevator, one of the largest grain terminal elevators to be constructed in the early 20th century, with a capacity of 3.8 billion bushels in Baltimore, Maryland.
- Bricktown, Oklahoma City, Oklahoma is home to OKC Rocks, a former grain elevator that has been turned into an indoor rock climbing facility located in Oklahoma City, Oklahoma.
- Northwestern Consolidated Milling Company Elevator A, also known as the Ceresota Building and "The Million Bushel Elevator"[citation needed] was a receiving and public grain elevator built by the Northwestern Consolidated Milling Company in 1908 in Minneapolis, Minnesota.
- Ingersoll Tile Elevator, elevator constructed of hollow red clay tiles, located in Ingersoll, Oklahoma, .
- North Dakota Mill and Elevator, largest flour mill in the United States, located in Grand Forks, North Dakota.
- Sheridan Flouring Mills, Inc., an industrial complex in Sheridan, Wyoming.
- Silo Point, currently being reconstructed from a grain elevator to a condominium located in Baltimore, Maryland.
- Zip Feed Tower, tallest occupiable structure in South Dakota from its construction in 1956-1957 until its demolition in December 2005.
See also
External links
|
| |
|
|
