The problem with the Brick and a tonne of concrete is that is prevents the natural life found in a mine, i.e. Bats, and as we found and saw recently, Otters.
The CA Are perhaps more sympathetic to this now, whereas clearly there was a time where (Perhaps under its Forerunner) they were not... Hence why so much is inaccesable.
On this note, where do these rather nice gates come from (a la Ystrad Einon)?
Clearly a form of control can only be a good thing to help preserve sites from the people who lurk in the background on sites like this, searching for intel, before entering wearing a shell suit and holding a lighter...
All thats needed to cause a mass concreting knee jerk reaction is a "Pearl Harbour" event, where several inexperienced fruit bats do a rapid descent without a rope....
Id be open to the idea of welding some gates up, and posting a key with a control person, i.e., a designated local with a sign in / out process...
Takes the edge off it for some yes, but theres some little sites Im looking at which would cause me to cry should they be heavily capped....
'FOR SALE: 1 Kidney and Half a Lung. If the Traffic Warden comes back to my car again, I can get more bits...'
'Instead of Helping, you stand, watch, and criticise, what a great British Achievement!'