[Note 509.2]

The mill was destroyed by fire in 1792 [i]
"As the proprietor had previously received several anonymous letters threatening destruction to the mill if he persisted to work it, there is every reason to conclude that the fire did not happen without design, but was the work of an incendiary. Mr. Grimshaw was about erecting another mill in Gorton, but this fire not only deterred him, but others, from bringing the invention into use; and the next attempt to introduce power-looms into Manchester was not made till sixteen years afterwards." [ii]

References:
[i] Grimshaw Origins and History http://grimshaworigin.org/grimshaw-involvement-in-the-industrial-revolution/robert-grimshaw-builder-of-loom/ [accessed 21May2109]
[ii] John Harland and T.T. Wilkinson, Ballads and Songs of Lancashire, Second Edition (London, George Routledge and Sons, 1875) P202