I am afraid that my good friend Roy M and I are guilty of a lot of this Mr Spitfire.
What happened was that there was a mass import from an existing database, possibly around 5,000 mines plus location details as well.
As far as "Wheal" argument goes, this has been argued before and this time I want to stay out of it.
Using the Mining Journal for reference there are of course mines that were known as a "Wheal X" and also just as "X".
I recently added Wheal Charlotte Tin Mine which was the name that I know it by, without realising that it was already in under "East Wheal Charlotte"
I can soon put this right myself, no worries.
The thing I personally find irritating about the mass import is the number of mines whose names are capitalised.
Thing to remember is that we all do our best, and better to help with the site and make the odd error than sit back and do nothing.
My avatar is a poor likeness.