Hi all, Does anyone know a good source for the corrugated underground drainage pipes, appx 900mm diameter?

Hi all, having never used cement/concrete underground, I would appreciate any advice? Having to cement boulders back in to whence they came to fill a hole. Do you just use standard 4:1 cement or is a concrete mix better? They won't be near water but obviously the cave is a damp environment so...

Any ideas please on buying a new Disto? I know they?ve changed over the years and the info sounds a little bewildering! Lol I?ll need one for above ground surveying as well as underground. Many thanks

If one has a surveyed depth and radio located point on surface, but has to dig a horizontally inclined tunnel to the point underground, how does one stay on track to the point. Ie; xM distance and xM depth? One could go over/under or to the sides of the surveyed point. Is it just a question of...

Hi all, just wondering if anyone can give some advice please? Need to delicately remove some mudstone roof, appx 2 feet wide and anything from 3-6 inches depth. Caps will do nothing, Snappers will cause too much damage and bang..forget it. What size P & F's do cavers generally use and where can...

Does anyone know of a local (Mendip) source for angle iron? Prob appx 75x75mm x 5x3m lengths ish? Thanks, Mark

Hi all, Can you please recommend a digital camera for underground photos. I'm a complete novice to photography, so nothing expensive please. I've been using an old 2Mill Olympus C120, which is bulky and I always get loads of moisture spots which ruins the shot? I have asked about this before...

Can anyone put me wise please? I am using a basic digital flash camera underground. It works well, but a lot of the time the pics are ruined by hoards of white orbs. I have been told this is moisture? Sometimes the pics are perfect. I have tried wiping the lens, turning off lights etc, to no...