Those Mysterious large green pipes running thru the Mon Valley along Pa 837 . What do they do ?

 If you have ever driven down Pa. 837 you would notice very large green  painted exposed industrial pipes from Munhall all the way down to  Jefferson Hills .

But what are they for ? lots of rumors and story's I have heard but their is a logical explanation 

and it makes perfect sense and saves United States Steel  and helps save environment in long run.  


The pipes run from the USS Clairiton Coke Works to Irvin works to Edgar Thompson Works. at one time it also served Homestead and Duquesne works when they existed. 

The pipes carry Combustible  Coking Gas which is produced when coal is heated in the process of making coke .

You can also see smaller  Nitrogen and Oxygen pipes in places as well  which run between the plants 



This coke  gas is a valuable Byproduct of Coke Making and is used at Irwin and ET to heat the blast furnaces .

Which cuts down the amount of natural gas to fire the furnaces. .

The pipes are not as expansive and prominent  as they once where  when they where still feeding Homestead but are still plainly visible as you ride down Pa.837


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