https://www.hse.gov.uk/pubns/mines06.pdf

http://www.ingr.co.uk/sar_construction.html

Walks

fisheries loop, there are some footpaths across mynydd cerrig hill too

 

i like this route onto mynydd but follow the track as the footpath is very boggy

 

follow the track then take the first right footpath, the first right track leads to a house as does the track if you follow it all the way. Follow the middle footpath keep going up till u find the trig point