In Caves and Karst science 29 (2) 2002 there is a thesis abstract ?Devlin R 2002 Leeds University Engineering Geology MSc - ?the situation and dynamics of the North Yorkshire Windypits?.
I cant find the full paper online and the only reference I have seen is the above.

Does anyone have access to the original paper or ideas on how to find it.

Thanks.

Have just sent a PM with a suggestion.

Try asking a member of ULSA to help you.  A copy of the thesis should be in the Engineering Department and possibly main library.  Whilst they might not respond to you, they might to a student.  Else search for the guy, LinkedIn is a good resource.