Opened in 1787 by the 
Northumberland Glass Company. 
Taken over by the 
General Electric Company 
in 1906 for production of 
light bulbs and tubes.

This is the largest of the four 
cones that were built - one of only 
four such survivals in the country.

The cone was restored in 1993.

 Various estimates put the number of
bricks used in it's construction as
somewhere between
1.00 and 1.75 million.