The site was the home of the foundry and the fabrication shops of the company, the steel warehousing and magnet shops being on the opposite side of Sheffield Road and the later established engineers tools and railway trackwork sections being located adjacent to Shepcote Lane, on a narrow strip of land between that road and the Sheffield Canal.
The Tropenas converters were similar to Bessemer process furnaces except that the air was blown across the surface of the molten metal from tuyères on the side of the vessel rather than the bottom.
A memorial to those workers from the company who lost their lives in World War I was fixed to the wall adjacent to the main doors.
In connection with EA Foundry (and their Non-Destructive Testing facility to ensure quality) they were the first in Britain to develop cast manganese high speed main line turnouts.
As negotiations were taking place the deal fell through leaving Osborn's and Hadfield's to merge, with the foundry being located on Hadfield's East Hecla (Vulcan Road) site, and Edgar Allen's to purchase Jessop's, relocating Jessop's special alloy (medium frequency) melting on Edgar's Sheffield Road site and the 3-ton electric furnace at one end of the Tropenas Melting Shop.
Again this never got off the drawing board and the land remains as an overflow car park for the shopping centre, used only at Christmas and the January sales period.
The gift of money which founded the institute was not without its advantages to his company where he believed that his workers would benefit from physiotherapy treatments to aid their recovery and so help in a speedy return to work.
The clinic survives today although in new premises in Glossop Road again under the name the Edgar Allen Institute and is part of the facilities offered by the Royal Hallamshire Hospital.