Uniqeness in an early Cargill elevator in northeastern South Dakota

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Brad Perry shares another photo of an early Cargill elevator, this one at Athol, S.D.

Athol and yesterday’s Ashton are twin towns in Spink County, a ways south of Aberdeen. Together they must have about 180 people.

We hope those people appreciate the uniqueness of their elevators.

One of Cargill’s early concrete elevators found in southern Minnestota

Elmore

Our friend, Brad Perry, saw the recent posts about Cargill history and was prompted to send some of his photos.

Here he shows us one of Cargill’s early concrete elevators. It’s located in Elmore, Minn., a tiny town in Faribault County, in the south-central part of the state right on the Iowa line.

As railroads pushed west in the 1870s, Will Cargill expanded his grain storage along the lines through northern Iowa and southern Minnesota.

And as the era of reinforced-concrete elevators unfolded, Cargill’s successors continued building.

We don’t know a thing about this elevator’s dimensions or who might have built it, but how impressive is the wooden elevator on the right? It stands almost shoulder to shoulder with the more modern concrete one. 

The story behind the WSJ’s story of a cast-off elevator in Burlington, Colo.

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By Ronald Ahrens

From reading Wayne G. Broehl, Jr.’s huge history of Cargill, I’ve become alert to other news about the grain-trading behemoth. So a Wall Street Journal article, titled “Growers’ New Clout Tilts Farm Economy,” caught my eye on Aug. 16 

“Powerful farmers push Cargill, ADM for better prices, and may soon compete,” the sub-headline reads.

According to Jacob Bunge’s story, several factors have risen in importance to give large farmers more leverage.

One is that farmers have more storage capacity for their grain. They don’t have to sell soon after harvest, going to the local elevator and accepting the current price.

A second factor is more options for direct sale of crops to stock feeders or ethanol plants.

And like everything else, there’s a digital aspect. “Venture capital-backed startups are developing services that scan a wider range of grain buyers or connect farmers directly with food makers,” Bunge reports.

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Bunge’s story in the Journal tells of a Cargill grain buyer who “said his job got harder still after Cargill in 2016 sold the Burlington, Colo., grain elevator–and later, nearby cattle feedlots that were reliable destinations for the grain grown by many of [the buyer’s] contacts.”

Here we skidded to a stop. Burlington, Colo., is in the records of Tillotson Construction Co. My uncle, Charles J. Tillotson, worked on Burlington and recalls a 1950 incident there involving a train and cement mixer. The locomotive derailed, but no one was injured.

The 300,000-bushel Burlington elevator had eight tanks of 20 feet in diameter and 115 feet in height. It was a twin-leg elevator with a pit 19 feet deep. The cupola measured 23 feet wide, 63.75 feet long, and 44 feet high. Pulley centers were 168 feet apart.

Could this be the same elevator Cargill sold two years ago? The big company has “divested itself of some far-flung grain elevators that aren’t near a railroad or river.”

And Bunge recounts another marvel: the anecdote concerns an Illinois farmer–one who tills 9,000 acres and rents out 5,000 more–who partnered with another farmer to buy a 750,000-bushel Cargill elevator. 

If they don’t find it too expensive to operate and insure, dispatching large quantities of grain when and where they want will be a challenge for Cargill and ADM to face.

 

Book report, Part Two: In the 1800s, Cargill already had huge elevators

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By Ronald Ahrens

Although it’s understandable why, we fail to appreciate how big and well-developed the grain business already was by the the years after 1895, when electric motors were adopted to power internal mechanisms and reinforced-concrete was first used for elevator construction.

This much we take away from Section One of Cargill: Trading the World’s Grain. Will Cargill, the “Frontier Entrepreneur” of the section’s title, boldly expanded his operation as the railroads pushed northwest and Minneapolis became a center of trade.

In an 1889 statement of holdings, Cargill said he had “54 Elevators & Warehouses in Minn & Dakota)” worth $147,597.16 and “16 Elevators and Warehouses in Wisc, G Bay RR” worth another $18,479.29.

Cargill 02We tend to think of wooden elevators as modest structures, but in the 1870s the New York Central & Hudson River Railroad had two massive terminals in New York City holding 3.5 million bushels of grain for export. Cargill shipped over the Great Lakes to Buffalo and then by rail to the terminals.

Buffalo also had millions of bushels of capacity in its multitude of elevators.

As early as 1873, a year of economic panic and the start of a profound international depression (not to mention a Midwestern grasshopper plague), Will Cargill was building elevators and warehouses along the railroad tracks. He shelled out more than $12,000 for “a large elevator” in Cresco, Iowa.

Panic 01Three years later Cargill had settled in La Crosse, Wisc. When he and his wife, Ella, went on a pleasure trip to Chicago, a La Crosse newspaper said, “They have been making so much money on wheat they they’ll buy Chicago if they feel like it.”

And in 1879, Cargill’s office became part of a telephone network in La Crosse. Author Wayne G. Broehl, Jr. points out it was only three years after Alexander Graham Bell invented the telephone.

At the same time Cargill expanded along the Green Bay and Minnesota line with nine warehouses. As a lake port, Green Bay became an important focal point, and here Cargill and his partner bought a 30,000-bushel warehouse and leased a 250,000-bushel terminal. The latter, which stood 100 feet high, had been built in 1862 for $80,000.

Decades later, Tillotson Construction Co., of Omaha, showed the value inherent in a fire-proof elevator built of reinforced concrete. In 1946, for example, Tillotson put up a 250,000-bushel concrete elevator at Dike, Iowa, for $87,250.

In the early 1880s, a new type of wooden elevator, the cribbed elevator, became common. As Milo S. Ketchum wrote in The Design of Walls, Bins, and Grain Elevators, published in 1907, “In this construction, 2″ x 4″, 2″ x 6″, or 2″ by 8″ are laid flatwise, so as to break joints and bind the structure together and are spiked firmly.”

Some called the method a “log cabin” approach. It resisted the insistent, fluid-like pressure on the sides and made for stout construction.”

In the 1880s, with another partner, George Bagley, Cargill pushed into the Dakota Territory with a small elevator at Aberdeen and several warehouses. By 1886, Bagley & Cargill also had a 250,000-bushel terminal in Minneapolis.

Combining all Cargill-controlled storage facilities, there was 1.6 million bushels of capacity–ready for the bounty of wheat that poured in as farming began in the Red River Valley.

 

Tillotson built a 181,000-bushel annex at Weatherford, Okla., in 1954

Reader Terry Christensen found himself wondering about something, so he wrote this comment, which is lightly edited for style:

Hello and thanks millions for these awesome stories!

My dad, George T. Christensen, worked for Tillotson Construction in the early ’50s, and he died in an unrelated accident while building the elevator in Boxholm, Iowa, in 1955. My mom told us that he worked on several elevators in Oklahoma, and I would love to see the construction notes for all the elevators they built in Oklahoma. I think they built the one in Weatherford, Okla., in 1952 or 1953 and maybe the one at Hydro Okla.?

Thanks again,

Terry Christensen

Well, in fact,  we don’t know anything about Hydro, but Tillotson Construction Co. sure did build at Weatherford–a 181,000-bushel storage annex in 1954.

We find specifications in the construction record. At the top of the entry, the coded notes tell us there were eight tanks of 17 feet in diameter by 115 feet in height. Two 24-inch conveyor belts moved grain through the run atop the tanks. There was a tunnel, probably from the main house to the annex. And a tripper would sweep grain off the belt into a storage tank.

“The key feature of the steam-powered conveyor belt that ran alongside the tops of the grain bins was the ‘trimmer’ or ‘tripper,’ a device that deflected the flow of grain off the belt, and down and into a particular grain bin,” writes William J. Brown in American Colossus: The Grain Elevator 1843 to 1943.

Here are the notes for Weatherford (as well as Dacoma and Orienta, Okla.); Newell, Iowa; and Bellwood, Neb.:

Weatherford 01

Weatherford 02

 

 

The engineering behind elevator construction began with retaining walls

 

Before electronic scales weighed the grain, weights and a fulcrum did the trick.

Story by Kristen Cart

Nothing is quite so revealing as a vintage book. Ronald Ahrens alerted me to his discovery of an engineering textbook, written by Milo S. Ketchum, about retaining walls and elevator bins. Prof. Ketchum was the dean of the College of Engineering at the University of Colorado (my alma mater) when he wrote The Design of Walls, Bins, and Grain Elevators. First published in 1907 by the Engineering News Publishing Company, of New York, it boasted a second edition in 1911.

From the first few paragraphs, revelations abound. Most eye-opening is the historical context of its publication.

In 1907, surviving Civil War veterans were well-established in their old age. No one yet considered the possibility of the worldwide conflagrations to come. Comanche wars in Texas were still an ugly living memory, more recent to people than the Vietnam War is to us. Grandmothers shared their memories of living in sod houses on the Great Plains. Movies were not yet a national pastime. Airplanes and automobiles were on the drawing board–the Ford Model T would begin production the following year.

When grain was delivered to elevators, it came by barge, rail, or wagon. The business model that drove the elevator boom was in its infancy. Engineers had just begun working with reinforced concrete for bridges, dams, and skyscrapers, but much remained to be done.

Grain transport by truck was a later innovation.

In the introduction, the book gets right to the nuts and bolts of the problem it purports to solve.

A special subset of engineering concerns granular fluids. Grain acts both as a solid and as a fluid–it can be piled in a conical pile because of internal friction which is absent in liquids, but it can flow very much like water. Containing such a fluid requires an understanding of internal pressures–both vertical and outward–that are exerted on a container. All of these considerations boil down to a mathematical model that accurately describes the materials, structures, and shapes required.

The book first examines retaining walls, the simplest structure for containing granular fluids, and proceeds to bins and elevators from there.

Failure to heed safe engineering principles bore disastrous results in Fargo, North Dakota.

Thus we have a textbook that gets into the weeds of that math and physics, ultimately used to teach future designers how to do grain bins. The young men schooled in the years following 1907 would be the builders, engineers, superintendents, and architects who started the concrete elevator building boom.

Early grain-storage leader Buffalo experienced the boom in full

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By Ronald Ahrens

“Silent crowd watches through the long night hours as workers search mill ruins for more missing bodies,” the Buffalo Times blared in 1913.

As an early leader in grain storage and milling, Buffalo, N.Y., was also a test site (of sorts) for elevator mishaps.

This report, culled from a firefighting blog, shows how the explosion even hit a passing train: 

An explosion devastated a grain elevator, killing at least 17 men and injuring 60 more. The elevator, located at the Husted Milling and Elevating Co. at Elk and Peabody streets, was left in flames after the dust explosion. The engineer of a passing train was killed by the blast that shattered windows, injuring many passengers. A dozen boxcars loaded with grain were also destroyed. Every ambulance in the city responded, but there were so many injuries that the flatbed section of the damaged train was used to transport many of the wounded grain elevator workers. Firemen poured tons of water on the volatile remains all day and into the night, hoping to cool things enough to allow a complete search. Losses were estimated at a half-million dollars.

Grain dust is explosive. After the electrification of elevator mechanisms in the late-1890s, it took a while to figure out that electric motors should be shielded to suppress sparks.

Static electricity can build up around conveyor belts.

Machinery can overheat.

And of course, there’s a reason “No Smoking” warnings are now everywhere in an elevator.

Tillotson Construction Company’s first reinforced concrete elevator, which was built in 1939 at Goltry, Okla., had a dust collection system. Notes in the company records say, “3 H.P. fan, 42″ collector dust bin.”

We lack any more details but are striving to increase our knowledge of dust collection inside elevators.