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Mine Exploration Forum

Author Rockrift powder
Boy Engineer

Joined: 20/06/2008
Location: Derby

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Rockrift powder
Posted: 26/01/2011 20:20:39
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I'm trying to find some information about an explosive called Rockrift (or Rock Rift). I believe it was made by Cooke's Explosives at Penrhyndeudraeth (either before and/or after ICI took over). Other than an obscure reference in some Hong Kong legislation I can't find anything else on the web. Distance precludes a quick trip to the Gwynedd Record Office where the Cooke's papers are lodged and nothing has yet come from a contact with some ex-employees. Anyone know anything about it? Keen to know when it was in production and a bit more about its strength etc. IP: 91.107.106.197
Morlock

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Joined: 31/07/2008

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Rockrift powder
Posted: 26/01/2011 21:31:57
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Appears to be listed as "Nobel's Explosive No. 1329".

Edit: Irrelevant pdf removed.
IP: 86.29.104.14 Edited: 27/01/2011 13:46:16 by Morlock
Phil Ford

Joined: 01/05/2008
Location: Caernarfon

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Rockrift powder
Posted: 26/01/2011 22:35:12
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We used to use an explosive made at Cookes called Rockite they changed the name about 1977 to Trimobel. It was used for pre-splitting in large blasts. It came in 30inch sticks 3/4 inch diameter, each stick had a cardboard collar so that the sticks could be coupled together. IP: 86.131.28.15
NickPeak

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Joined: 16/08/2010
Location: Derbyshire

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Rockrift powder
Posted: 27/01/2011 13:18:46
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Recent arrival at the Peak District Mining Museum - explosives box, source unknown and marked:

ROCKITE
BLASTING CARTRIDGES
Permitted Explosive
Class 3 Division 1


The box has a garter crest with

CURTISS & HARVEY, LONDON

and a dragon in the centre of the crest.

Is this of any help?
IP: 62.49.22.59
Morlock

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Rockrift powder
Posted: 27/01/2011 13:44:26
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The Rockite and Rockrift seem to be a different grades?

Nobel's Explosive No. 1321 Rockite
Nobel's Explosive No. 1329 Rockrift Powder
IP: 86.29.104.14
Mr.C

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Joined: 23/03/2008
Location: North Staffordshire

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Rockrift powder
Posted: 27/01/2011 13:51:56
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Morlock wrote:


The Rockite and Rockrift seem to be a different grades?

Nobel's Explosive No. 1321 Rockite
Nobel's Explosive No. 1329 Rockrift Powder

Must have stopped making it a while back. 1329 was no longer on the HSE Approved List in 1985 - the earlyist one I have unfortunatly.

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If things dunner change - the'll stop as the' are.
IP: 82.16.206.194
Morlock

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Rockrift powder
Posted: 27/01/2011 14:16:18
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Although both grades are on this 'Dangerous Goods' list I suspect the Version Date is meaningless?

[web link]
IP: 86.29.104.14
Mr.C

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Rockrift powder
Posted: 27/01/2011 22:51:34
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I think you may be misreading the list, it's actualy two separate columns, so 1329 & Rockrift are separate entities IINM.

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If things dunner change - the'll stop as the' are.
IP: 91.111.172.188
Morlock

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Rockrift powder
Posted: 27/01/2011 23:11:50
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Mr.C wrote:

I think you may be misreading the list, it's actualy two separate columns, so 1329 & Rockrift are separate entities IINM.


I suspect you may be correct. Blush Big Grin
IP: 82.26.208.86
Boy Engineer

Joined: 20/06/2008
Location: Derby

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Rockrift powder
Posted: 28/01/2011 13:55:17
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Thanks for the responses so far - all helpful! IP: 80.177.35.242
Ben Cooper

Joined: 27/05/2009
Location: Glasgow

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Rockrift powder
Posted: 29/01/2011 23:24:33
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Rockite is briefly mentioned in a 1921 Nobel's booklet as a blasting powder, similar to Quarry Dynobel. I can't find any mention in any Nobel's literature of Rockrift...

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