binocular looking out (photo) · AditNow Community

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grahami
50.2% (Neutral)
Newbie Topic Starter

17 years ago

I don't suppose you managed to measure the diameter of the bores, did you ? (Or was this taken beefore the discussion of the bore sizes on "The Hunter Tunneler Returns!"?)

Cheers

Grahami

Photograph:

🔗Abercwmeiddaw-Slate-Mine-User-Album-Image-037[linkphoto]Abercwmeiddaw-Slate-Mine-User-Album-Image-037[/linkphoto][/link]

The map is the territory - especially in chain scale.

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thorpey
50.2% (Neutral)
Newbie

17 years ago

will proberbly go up later this afternoon for a quick check on the size.
Thorpey

Nut deep in water!

thorpey
50.2% (Neutral)
Newbie

17 years ago

I whent for an afternoon walkarmed with tapemeasure.
bore diameter 2250mm approx 7'4.5"
bored in 2" sections
🔗Abercwmeiddaw-Slate-Mine-User-Album-Image-042[linkphoto]Abercwmeiddaw-Slate-Mine-User-Album-Image-042[/linkphoto][/link]

The two tunnels are bored at a pitch of 1910mm 6'3"
The short bore is slightly higher than the long bore & the long bore goes for an extra 20 meters.
Thorpey 😉

Nut deep in water!