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New ventilation tool available for manure pit designers</

Online tool can help create safer environments

By Diego Flammini
Assistant Editor, North American Content
Farms.com

Farmers planning on having manure storage pits constructed may benefit from pointing builders and engineers to a new online tool that can help create safer environments.

The Confined-Space Manure Ventilation Design Tool was created by researchers at Penn State’s College of Agricultural Sciences and is designed to help engineers, farmers and safety authorities determine how long a confined manure storage space needs to be ventilated for to remove toxic and asphyxiating gases.

Many storage pits contain hydrogen sulfide, carbon dioxide, methane and ammonia, and some statistics show as many as 10 people die annually in North American animal-manure pits.

Penn State tool

After users enter barn design, dimensions, manure storage size and ventilation configuration into the online tool, it generates customized information about the concentrations of any toxic gases.

The online tool is the end result of decade-long research by members of different organizations including Penn State’s Department of Agricultural and Biological Engineering; they say the tool is made for users of all levels.

"You don't have to be a computational fluid design or computer assisted design expert to use the online design tool. Results include contaminant gas decay curves, real-time animations of gas decay and ventilation time required to reduce contaminate gas and replenish oxygen to acceptable levels for human entry," said Dan Hofstetter, a research assistant in agricultural and biological engineering who helped develop parts of the online tool.


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The 12-day war between Iran-Israel came to an end sending crude oil futures plunging as the big fund speculators removed the war risk premium.

The weather risk premium in the Ag complex is sending corn, wheat and soybean futures lower on month-end selling ahead of the market moving USDA quarterly grain stocks and acreage reports on June 30th.

Instead, funds were chasing and sending tech stocks higher with the S&P 500/NASDAQ indexes setting new all-time record highs!

June 1 USDA Hogs and pigs report was slightly bearish while the U.S. $ Index traded to new contract lows as the de-dollarization that began in 2014 continues.

Feed in the form of soybean meal futures for livestock producers got cheaper, trading to new contract lows.

The Stats Canada seeded acreage update was bullish canola and wheat.