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Posts by derrickman

Showing 1334 results below:

Author Message
Topic: Disused Mine Ventilation natural and forced.
derrickman

Forum: General Chat   Posted: 10/06/2009 07:50:51   Subject: Disused Mine Ventilation natural and forced.
depending on what equipment you have for digging with, there are really only three ways of ventilating effectively;

1) an open shaft or adit connection at a different elevation to the entry
Topic: Disused Mine Ventilation natural and forced.
derrickman

Forum: General Chat   Posted: 10/06/2009 06:33:26   Subject: Disused Mine Ventilation natural and forced.
the fact is that when a lot of these mines were worked, ventilation levels were accepted which were at times, plain dangerous.

there are a whole range of reasons why disused workings don't
Topic: Charcoal as fuel for Cornish engine
derrickman

Forum: South West England   Posted: 09/06/2009 22:59:34   Subject: Charcoal as fuel for Cornish engine
charcoal was widely used at one time as a fuel for smelting because of its clean, hot-burning quantities, and relative ease of transport.

it's far inferior to coal as a fuel for steam engi
Topic: Devon Great Consols Archive Album (album)
derrickman

Forum: South West England   Posted: 09/06/2009 08:55:26   Subject: Devon Great Consols Archive Album (album)
I [i]do[/i] like the bit about the cross-dressing mining engineer.... I remember the DGC activities being the subject of persistent rumour and gossip when I was at CSM around that time.

On
Topic: Brownley Hills - Yesterdays' Golconda?
derrickman

Forum: North West England   Posted: 08/06/2009 10:59:39   Subject: Brownley Hills - Yesterdays' Golconda?
I don't actually recall where I got it, it is on my bookshelf along with 'Northern Caves' and 'Caves of Derbyshire' from the late 70s, various books about Peak District lead mining ( all with paper du
Topic: Brownley Hills - Yesterdays' Golconda?
derrickman

Forum: North West England   Posted: 08/06/2009 10:05:07   Subject: Brownley Hills - Yesterdays' Golconda?
I looked at it only the other week, having been taken down Mouldridge Mine for the first time. There is a pic of the 'dressing machinery chamber' before the Crich people removed most of the equipment
Topic: Brownley Hills - Yesterdays' Golconda?
derrickman

Forum: North West England   Posted: 08/06/2009 09:08:53   Subject: Browmley Hills - Yesterdays' Golconda?
Brownley/Browmley, yes that's a typo.

18th/19th century, only a guess. Don't really know that much detail about that kind of thing
Topic: old school cap lamps..
derrickman

Forum: General Chat   Posted: 08/06/2009 09:06:48   Subject: old school cap lamps..
ha ha, remember this stuff... I had an Nife cell. but in an Ceag case ( complete with lamp cable up over the top ). I don't ever remember having a decent second-hand Oldhams.

I don't remem
Topic: Brownley Hills - Yesterdays' Golconda?
derrickman

Forum: North West England   Posted: 07/06/2009 13:01:13   Subject: Brownley Hills - Yesterdays' Golconda?
I picked up a book called Yesterdays' Golcondas in a charity shop, it seems to have been published in about 1982. A lot of the pics date from the mid to late 70s.

there are some particulat
Topic: old school cap lamps..
derrickman

Forum: General Chat   Posted: 05/06/2009 13:42:21   Subject: old school cap lamps..
found this on the Durham Mining Museum website

http://www.dmm-gallery.org.uk/gallery/0002-000.htm

I remember going caving in the early 70s with a mixed bag of this sort of old cl
Topic: favourite hard hat....
derrickman

Forum: General Chat   Posted: 05/06/2009 13:32:32   Subject: favourite hard hat....
just bought a Tuffmaster .. what a hat, super piece of kit. Light, stiff and comfortable, with a good secure lamp bracket at a sensible angle.

no use for caving, with its broad 'sinker' st
Topic: Mining subsidence in Troon?
derrickman

Forum: South West England   Posted: 02/06/2009 14:19:19   Subject: Mining subsidence in Troon?
possibly.. but who by? Taking responsibility for the maze of old adits around there is no mean job.
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 20:57:02   Subject: New Lease of Life for Mt Wellington Mine
the link ( above ) says about all there is to say on the subject, really. I must have a read of it when I have time.

however I note that the academics at CSM have long since turned their a
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 20:31:06   Subject: New Lease of Life for Mt Wellington Mine
I think if this was going to work, we would be doing it already... 10% of the power to drill the holes, more like...
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 20:08:49   Subject: New Lease of Life for Mt Wellington Mine
you need at least two holes, from recollection at Rosemanowse there were 6, but I could be mistaken at this stage....

found this!

http://www1.eere.energy.gov/geothermal/pdfs/egs
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 19:29:22   Subject: New Lease of Life for Mt Wellington Mine
ha ha, doing that once should be enough for anybody.....
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 18:45:34   Subject: New Lease of Life for Mt Wellington Mine
I worked as a roughneck for Kenting Drilling at Rosemanowse, talking of hot rocks....
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 18:22:13   Subject: New Lease of Life for Mt Wellington Mine
that doesn't surprise me at all. I'd rather assumed that the Seacore people would turn up somewhere after selling out to Fugro, it's a common business model in the offshore industry. No-one much else
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 17:01:26   Subject: New Lease of Life for Mt Wellington Mine
ok, this is all getting really interesting.

googling 'Ocean Fabrications' brings you here...

http://www.oceanfabrication.com/capabilitystatement.html

I'm puzzled by t
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 16:17:03   Subject: New Lease of Life for Mt Wellington Mine
my honest opinion is that 'green' energy sources like wind and wave power should be taken with a large pinch of salt.

none of the figures I have seen make any real sense, apart from places
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 01/06/2009 09:28:31   Subject: New Lease of Life for Mt Wellington Mine
Cornwall has a history of start-up businesses in the offshore industry, although they tend to be the sort that are grown to a certain size and then sold out to major players who want to be rid of the
Topic: New Lease of Life for Mt Wellington Mine
derrickman

Forum: General Chat   Posted: 31/05/2009 09:21:47   Subject: New Lease of Life for Mt Wellington Mine
hmmmm..... :confused: .. at the risk of being a wet blanket, this seems to be a highly speculative start-up operation who are, as the article says, coming to an area where the transport links are pro
Topic: Mine below Carn Brea, 1890
derrickman

Forum: South West England   Posted: 29/05/2009 13:07:58   Subject: Mine below Carn Brea, 1890
it wouldn't be hard to block and adit like that. 9 bag grout pan plus a couple of pallets of cement on the back of a Transit, couple of packs of blocks taken the same way.. some local rocks, there are
Topic: Mine below Carn Brea, 1890
derrickman

Forum: South West England   Posted: 29/05/2009 08:08:50   Subject: Mine below Carn Brea, 1890
I remember the Smugglers' Cave, it was open when I was in Camborne. That may have been what Atkinson was referring to, although the location is wrong and from recollection it wasn't large

a
Topic: Polperro Sea Outfall
derrickman

Forum: South West England   Posted: 28/05/2009 12:58:00   Subject: Polperro Sea Outfall
that's about right. There is a side branch to the stream lower down.

the access is via wiers which over-top when the flow reaches a certain level, and discharges into the outfall.

Topic: Croesor and Rhosydd (Not the Through Trip) on Saturday 30th May
derrickman

Forum: North Wales   Posted: 28/05/2009 12:49:05   Subject: Croesor and Rhosydd (Not the Through Trip) on Saturday 30th May
I fancied this trip and had to bow out for other commitments, let me know what develops. If it is postponed I would be up for it, dates permitting
Topic: Polperro Sea Outfall
derrickman

Forum: South West England   Posted: 28/05/2009 11:51:16   Subject: Polperro Sea Outfall
http://www.polperrofestivalsandlights.co.uk/documents/flooddefence.pdf

surfing about and found this. Definitely a bit different. Both ends are securely gated and the Swallow Cove end is ina
Topic: Mine below Carn Brea, 1890
derrickman

Forum: South West England   Posted: 28/05/2009 11:36:53   Subject: Mine below Carn Brea, 1890
that's the one. I have it as 69159 40778. It isn't visible on GE because of the overhanging foliage, but you can see it ok on MM.

I first saw it in 1976, straining the old memory cells a b
Topic: Mine below Carn Brea, 1890
derrickman

Forum: South West England   Posted: 28/05/2009 09:13:29   Subject: Mine below Carn Brea, 1890
any refs for that portal? I think I saw it some time ago, but can't see it on MemoryMap or GE
Topic: Mine below Carn Brea, 1890
derrickman

Forum: South West England   Posted: 27/05/2009 19:05:03   Subject: Mine below Carn Brea, 1890
I've been trawling about and putting any grid refs I can find on memorymap, I can't find any refs on that side of the hill which tends to suggest that anything that was ever there, has been lost for a
Topic: Mine below Carn Brea, 1890
derrickman

Forum: South West England   Posted: 27/05/2009 16:10:37   Subject: Mine below Carn Brea, 1890
I remember one of Ron Hooper's 'expeditions' to this area when I was at CSM in the 1970s. No accessible workings were visible at that time. I am fairly sure that the location of the chimney in the low
Topic: Philadelphia coal..
derrickman

Forum: North America   Posted: 25/05/2009 14:26:02   Subject: Philadelphia coal..
http://digital.hagley.org/cdm4/item_viewer.php?CISOROOT=/p268001coll24&CISOPTR=66&CISOBOX=1&REC=2

interesting stuff, more links on to related pages

Topic: South Crofty .. in case you were wondering...
derrickman

Forum: South West England   Posted: 23/05/2009 12:32:15   Subject: South Crofty .. in case you were wondering...
I don't suppose there would be any connection between a tourist website and at least some of the plans for the site... ;)

that's the trouble down there, no-one is neutral and none of the i
Topic: South Crofty .. in case you were wondering...
derrickman

Forum: South West England   Posted: 23/05/2009 07:40:02   Subject: South Crofty .. in case you were wondering...
from the 'Cornwall in Focus' tourist website;

"The last working tin mine, South Crofty at Pool shut down in 1998 and despite local efforts seems unlikely to reopen again. 'Crofty' as it is
Topic: Hanomag/Siemans loco no.3 of 1910 (photo)
derrickman

Forum: North East England   Posted: 22/05/2009 10:04:14   Subject: Hanomag/Siemans loco no.3 of 1910 (photo)
didn't the Swiss railways have similar main-line locos nick-named 'crocodiles'
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 21/05/2009 15:31:59   Subject: Dumping the Wheal
if these mines have 'common' names given by cavers in the 50s, and 'proper' names which are presumably derived from their working incarnations, they need to be linked on the database. Presumably by be
Topic: favourite hard hat....
derrickman

Forum: General Chat   Posted: 21/05/2009 14:45:57   Subject: favourite hard hat....
where do you source them from?

I have a new aluminium hardhat I got in Kazakhstan a couple of years ago, as you say a poser's delight... there are some full-brim hats at Combe Down, there s
Topic: favourite hard hat....
derrickman

Forum: General Chat   Posted: 21/05/2009 13:08:51   Subject: favourite hard hat....
because you can't buy them any more... :)

tunnel miners clung tenaciously to their bump caps for years after they were officially superseded by safety helmets. Drillers clung to their Mac
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 21/05/2009 10:05:10   Subject: Dumping the Wheal
a few comments based on a fair amount of experience of trawling old records at work...

1) local names are often descriptive and tend to repeat themselves. I don't know how many 'castletons'
Topic: Surviving the washer - a lamp's tale
derrickman

Forum: Lamps & Lighting   Posted: 21/05/2009 09:42:43   Subject: Surviving the washer - a lamp's tale
my old Premier 'stinky' has been through the wash a couple of times, my mum used to keep an old twin-tub in the garage for overalls and work clothes

never tried it with the Oldhams though
Topic: Bryn yr Afr? (dead sheep mine)
derrickman

Forum: General Chat   Posted: 20/05/2009 20:29:21   Subject: Bryn yr Afr? (dead sheep mine)
snide, moi? heaven forfend ;( ... I just got that off wikipedia, along with several other sources. The part about never having met a Cornish speaker is a simple statement of fact.

I've wo
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 20/05/2009 19:26:57   Subject: Dumping the Wheal
well, quite so.

if a mine is commonly known as Wheal Jane it should be enetered as such. If it entered twice, for historic reasons or a simple mistake, one entry should be deleted. If you
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 20/05/2009 19:14:21   Subject: Dumping the Wheal
I'm on the same page as Vanoord, by the looks of it.

you type in the name, or the 'sounds like', or one keyword from its name, and it gives you the possible answers.

as long as
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 20/05/2009 19:07:10   Subject: Dumping the Wheal
but surely the total column height for whatever number of lines of text, is the same regardless of which letter it is filed under?

I see your point but I don't quite follow it.

a
Topic: Bryn yr Afr? (dead sheep mine)
derrickman

Forum: General Chat   Posted: 20/05/2009 19:03:44   Subject: Bryn yr Afr? (dead sheep mine)
[quote="Cornish Pixie"]I, and no one else as far as I am aware, is suggesting that anyone who does not speak Cornish or have any interest in the language is not a true Cornish miner. You have taken my
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 20/05/2009 18:35:19   Subject: Dumping the Wheal
If I was looking for 'Wheal Jane' I would look under W.....
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 20/05/2009 18:20:44   Subject: Dumping the Wheal
that's the key point... what does the map show?
Topic: Bryn yr Afr? (dead sheep mine)
derrickman

Forum: General Chat   Posted: 20/05/2009 18:13:28   Subject: Bryn yr Afr? (dead sheep mine)
it's all a matter of perspective, but I have to say that I have never met anyone who spoke Cornish ( in any of its variants ) to any useful extent, and I found the 'deposed aristocracy' attitudes depi
Topic: Dumping the Wheal
derrickman

Forum: North West England   Posted: 20/05/2009 16:55:46   Subject: Dumping the Wheal
I don't speak Cornish or Welsh, and this seems at times more like reinventing the wheel than anything else.

I agree with spitfire. There is a lot of ambiguity and variation in the naming o
Topic: Bryn yr Afr? (dead sheep mine)
derrickman

Forum: General Chat   Posted: 20/05/2009 16:36:24   Subject: Bryn yr Afr? (dead sheep mine)
[quote="Cornish Pixie"]I've been watching this thread with some interest.

I understand the concern regarding the naming of mines on this site that has resulted in duplicate entries which po
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