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Hob H
Hob Nov 26, 2005 21:58:38
Replying to smallblueplanet

Well done sbp. That was a sensible bit of communication. (I know, I know, you don't care what people think etc...).

Having not been at the meeting, I couldn't offer any comment on the amount of Silbury that will be extracted, but (strangely) I would be interested to hear if you think that EH have been saying this all along. Or has there been a change in their plans regarding how much original (non-backfill) material will be extracted during tunnelling?

Links to relevant EH text would be nice, but no pressure, I'll not really give a flying eff if you can't be arsed, (or even if you just don't know!)

S smallblueplanet
smallblueplanet Nov 26, 2005 22:19:30
Replying to Hob

"I would be interested to hear if you think that EH have been saying this all along. Or has there been a change in their plans regarding how much original (non-backfill) material will be extracted during tunnelling?"

It seems to me the 'extra tunnelling' has been overstated by some, and the original EH report only ever said extra material (with a figure in cubic meters), might have to removed if it was necessary, in a worse case scenario, in the risk assessment. However it always been EH's declared intent to remove the minimum material necessary to safely backfill the tunnel.

A possible worse case scenario was enlarged upon today, with the example where when the struts of the corroded tunnel supports have to be removed it is possible that a small amount of material where they contact the 'tunnel' might have to be removed as well.

I believe the report is online, someone will have the link I'm sure, but I'll have a looksee too.

S smallblueplanet
smallblueplanet Nov 26, 2005 22:40:21
Replying to Hob

EH site

http://www.english-heritage.org.uk/server/show/category.8613

Conserving Silbury Hill page, the Risk Assessment is called 'Silbury Hill Assessment' (5mb pdf)

(Found in the cellar, in a filing cabinet, in a folder marked....!!!!) ;-)