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Posts by lozz

Showing 1068 results below:

Author Message
Topic: Lead ingot from wreck
lozz

Forum: New recruits!   Posted: 13/09/2020 16:29:44   Subject: Lead ingot from wreck
Long shot but could that be PONTPEAN (France)

Lozz.
Topic: Miners Tools.
lozz

Forum: Mining Methods & Techniques   Posted: 04/09/2020 12:49:52   Subject: Miners Tools.
Drilling steels had a habit of breaking clean in two if "whipping" was involved, by that I mean using long drilling steels to start drilling a hole with, I had a near miss on more than one occasion as
Topic: Imolent warranty - no go
lozz

Forum: Lamps & Lighting   Posted: 24/08/2020 15:04:03   Subject: Imolent warranty - no go
As we said in the trade "Yes Madam, guaranteed for 2 years or 'till you first use it, whichever comes first"

The battery not taking charge below a certain threshold is the manufactures way
Topic: What’s the strangest thing you’ve found?
lozz

Forum: General Chat   Posted: 01/04/2020 10:25:46   Subject: What’s the strangest thing you’ve found?
I remember that event, used to live not far away.

Lozz.
Topic: Mining term: jem crow
lozz

Forum: General Chat   Posted: 28/03/2020 18:31:23   Subject: Mining term: jem crow
Always called a Jim Crow many moons ago when I worked underground, the bar that was used to operate it was called a crow bar, not that that's definitive in any way.

Lozz.

Topic: What’s the strangest thing you’ve found?
lozz

Forum: General Chat   Posted: 26/03/2020 10:52:18   Subject: What’s the strangest thing you’ve found?
I found that when the double deck cage came down to the 310 fathom shaft station carrying the bang wagons to restock the bang magazine that the cage door on the bottom deck wasn't there:o:o:o

Topic: info
lozz

Forum: Midlands   Posted: 25/03/2020 14:58:00   Subject: info
[quote="Jim MacPherson"][quote="lozz"]Locard.

Lozz.[/quote]

Not come across that before Lozz, presume it means a nice person.[/quote]

"Every contact leaves a trace"
Topic: info
lozz

Forum: Midlands   Posted: 25/03/2020 14:32:05   Subject: info
Locard.

Lozz.
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 21/02/2020 10:33:45   Subject: 3W Cree torches in Tesco's
Not the first or the last to do that trick.

Always isolate....at least....(SIDE)…:

https://www.youtube.com/watch?v=G2RPu4Hs_qo

Lozz.
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 20/02/2020 15:41:38   Subject: 3W Cree torches in Tesco's
[quote="Morlock"]"AVO 8 meter"

Was it the Mk 2 with the 'ins' button?[/quote]

I don't recall an INS button just the INS position on the AC Volts/Ohms selector switch, the one I h
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 20/02/2020 10:30:12   Subject: 3W Cree torches in Tesco's
PPE.

Lozz.
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 19/02/2020 18:10:26   Subject: 3W Cree torches in Tesco's
Test gear can sometimes get expensive, and in many cases gets little use, had a fair bit of test gear over the years, mostly second hand, I don't do bench electronics anymore so got rid of most of it,
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 19/02/2020 16:10:16   Subject: 3W Cree torches in Tesco's
I've read that document before.

I understand pulse current, that's how rectifier diodes work, in some power supplies the current pulse can be several times greater than the load current.
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 17/02/2020 15:58:57   Subject: 3W Cree torches in Tesco's
[quote="SimonRL"][quote="lozz"]Edit facility has disappeared from my last post....what's going on?

Lozz.[/quote]

An admin must have tidied something up in your post. Once that's
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 17/02/2020 15:47:19   Subject: 3W Cree torches in Tesco's
Edit facility has disappeared from my last post....what's going on?

EDIT: I've now deleted the said post.

Lozz.
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 17/02/2020 12:58:17   Subject: 3W Cree torches in Tesco's
[quote="royfellows"]You cant compare a quad die Light Emitting Diode with other semi conductor components in this respect, the latter normally being subject to a tolerance of as little as 5%.[/quote]<
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 17/02/2020 11:45:10   Subject: 3W Cree torches in Tesco's
[quote="Speedycaver"]Roy's point is that in order to maintain a certain light output after 50,000 hours or what ever, you can only drive it so hard but, in reality, we would only drive a torch at full
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 17/02/2020 10:29:52   Subject: 3W Cree torches in Tesco's
From the specs. I make it approx. 12.6 to 12.7V for 1500mA.

I wouldn't recommend exceeding the manufactures spec for current by nearly 50%, at least not for continuous current.

L
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 12/02/2020 17:06:15   Subject: 3W Cree torches in Tesco's
[quote="royfellows"]Why on earth is the thread revived?[/quote]

I'm not sure.

I only came across it because of todays post by Vanoord.

Lozz.
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 12/02/2020 16:08:37   Subject: 3W Cree torches in Tesco's
[quote="royfellows"]Err, this is a 10 year old thread and technology not to mention availability has moved forward a bit.[/quote]

In context of the thread and date....silicone can migrate,
Topic: 3W Cree torches in Tesco's
lozz

Forum: Lamps & Lighting   Posted: 12/02/2020 13:43:01   Subject: 3W Cree torches in Tesco's
[quote="Strangely Brown"]Left it open for a while to allow the volatiles to evaporate.[/quote]

A wise move with electrical contacts around.

Lozz.
Topic: Great County Adit
lozz

Forum: New recruits!   Posted: 23/01/2020 15:50:35   Subject: Great County Adit
In this and all the modern photo's the steam piston cylinder has been attached incorrectly, it should be rotated 90 degrees anti-clockwise:

https://www.americansouthwest.net/california/yose
Topic: Great County Adit
lozz

Forum: New recruits!   Posted: 23/01/2020 14:19:58   Subject: Great County Adit
A report from circa 1883 reckons the drills used were made by Burleigh:

https://books.google.co.uk/books?id=UaZIAQAAIAAJ&pg=PA72&dq=%22great+sierra+consolidated%22+%22burleigh%22&hl=en&sa=X
Topic: Great County Adit
lozz

Forum: New recruits!   Posted: 22/01/2020 17:54:41   Subject: Great County Adit
I remember the portal at county adit before it got all poshed up, used to live close by at one time.

Lozz.
Topic: Great County Adit
lozz

Forum: New recruits!   Posted: 22/01/2020 16:00:15   Subject: Great County Adit
[quote="royfellows"]I am puzzled, if I have the right photo, how that could be taken for the old Great County Adit in Cornwall.

The discharge of water, or lack of it, should be the great gi
Topic: Great County Adit
lozz

Forum: New recruits!   Posted: 22/01/2020 15:08:27   Subject: Great County Adit
Some history here:

https://books.google.co.uk/books?id=CddGAQAAIAAJ&pg=RA1-PA160&lpg=RA1-PA160&dq=bennettville+mine+compressor&source=bl&ots=GO8sRzwhza&sig=ACfU3U1SPI8qgGQEJsHaiIhRn5Z0DlQcW
Topic: Great County Adit
lozz

Forum: New recruits!   Posted: 22/01/2020 13:19:33   Subject: Great County Adit
Cadbury's.

Anyways here's a link to some photo's

https://www.americansouthwest.net/california/yosemite/bennettsville-mine-trail.html

Lozz.
Topic: Great County Adit
lozz

Forum: New recruits!   Posted: 22/01/2020 11:57:32   Subject: Great County Adit
Re: that opinions photo, I know where that is.....cryptic clue....

...the location...fortyniner....model village in the midlands...if bennett was a river.

Full set of pics are o
Topic: Geevor Adit (3rd level).
lozz

Forum: South West England   Posted: 20/01/2020 18:13:23   Subject: Geevor Adit (3rd level).
Long time ago for me but I remember doing some clearing out on the adit level that spews out just above sea level at the bottom of the cliffs, had to scramble down the cliff with banjos picks etc, a s
Topic: For Sale - Holman silver3 rock drill
lozz

Forum: For Sale! (and wanted / for swap)   Posted: 22/10/2019 19:49:25   Subject: For Sale - Holman silver3 rock drill
[quote="sinker"]No worries, the link works fine. Great photo by the way.

That drill is what I thought a Silver 3 was, when mounted on an airleg. It might not be a 'stoping drill' but you co
Topic: For Sale - Holman silver3 rock drill
lozz

Forum: For Sale! (and wanted / for swap)   Posted: 22/10/2019 18:56:47   Subject: For Sale - Holman silver3 rock drill
Cheers for that Sinker...hopefully photo link will display.

Taken approx. 47 years ago, believed to have been taken by me (the miner in the photo owned the camera and I was working with him
Topic: For Sale - Holman silver3 rock drill
lozz

Forum: For Sale! (and wanted / for swap)   Posted: 22/10/2019 18:28:38   Subject: For Sale - Holman silver3 rock drill
[quote="Tamarmole"][quote="lozz"](Silver) 303S was the Stoper with the integral leg, the 303A was for a separate Air leg (jackleg) and the 303H was for manual Hand pushy pushy....so far as I know.
Topic: For Sale - Holman silver3 rock drill
lozz

Forum: For Sale! (and wanted / for swap)   Posted: 22/10/2019 10:52:19   Subject: For Sale - Holman silver3 rock drill
(Silver) 303S was the Stoper with the integral leg, the 303A was for a separate Air leg (jackleg) and the 303H was for manual Hand pushy pushy....so far as I know.

Maybe the Silver 3 follow
Topic: For Sale - Holman silver3 rock drill
lozz

Forum: For Sale! (and wanted / for swap)   Posted: 21/10/2019 19:05:27   Subject: For Sale - Holman silver3 rock drill
Underground where I worked the one in the OP's photo was used primarily for drilling downwards, ie: in a underhand stope or sometimes for drilling horizontal holes for iron pegs in a very narrow drive
Topic: Lithium Mining in Cornwall
lozz

Forum: General Chat   Posted: 06/10/2019 18:07:48   Subject: Lithium Mining in Cornwall
"Dear deep Cornish Lithium Mining Project & Acme Co. Gizza job because I'm optimistic this project will come to fruition real good"

"Dear Gizza, thank you most sincerely for applying for a
Topic: Backache
lozz

Forum: General Chat   Posted: 12/07/2019 21:29:09   Subject: Backache
Hand mucking out in poorly ventilated sub level inters that had been driven by a short fella down a Cornish tin mine was a recipe for back ache and sweat ache for sure, when the geologist and the shif
Topic: Electrical Engineer Help Needed!
lozz

Forum: General Chat   Posted: 30/05/2019 18:33:18   Subject: Electrical Engineer Help Needed!
So far as I can make out it's a split field DC generator, normally each set of field coils would be fed via its own regulator circuit, thus allowing more current to be generated at low revs than would
Topic: Historic photo archive
lozz

Forum: General Chat   Posted: 24/02/2019 13:25:20   Subject: Historic photo archive
County Hall (not CRO) Truro used to have the aerial photos (or copies of) taken post WW2 ('46 to '50 ish) from camera enabled Spitfires etc, I managed to get a copy of one for next to nowt on a person
Topic: Magnetic Dec.
lozz

Forum: General Chat   Posted: 25/11/2018 15:51:40   Subject: Magnetic Dec.
Not sure if this link has been posted before, it's quick and easy to use, just tried it with a known reference I had from the BGS a while back, more or less spot on, handy for old mine plans that only
Topic: Li thium Ion Battery digest
lozz

Forum: South Wales   Posted: 24/09/2018 20:35:33   Subject: Li thium Ion Battery digest
[quote="ChrisJC"][quote="lozz"]A cells voltage or the voltage from any other voltage source cannot fall below 0 volts, only it's sign can change from a given reference point.

Lozz.[/quote]<
Topic: Li thium Ion Battery digest
lozz

Forum: South Wales   Posted: 24/09/2018 11:39:38   Subject: Li thium Ion Battery digest
A cells voltage or the voltage from any other voltage source cannot fall below 0 volts, only it's sign can change from a given reference point.

Lozz.
Topic: Li thium Ion Battery digest
lozz

Forum: South Wales   Posted: 23/09/2018 09:45:31   Subject: Li thium Ion Battery digest
"a cell voltage lower than 0V can occur"

Nope.

Lozz.
Topic: Daventry
lozz

Forum: Midlands   Posted: 14/05/2018 12:43:04   Subject: Daventry
5XX.

Lozz.
Topic: Dowsing for secret underground tunnels etc.
lozz

Forum: New recruits!   Posted: 10/05/2018 16:18:18   Subject: Dowsing for secret underground tunnels etc.
[quote="Roger L"]You are taking the weight onto the short leg so it will not work.
[/quote]

Actually it's potentially less friction:

https://www.paranormalstudy.com/product/
Topic: Dowsing for secret underground tunnels etc.
lozz

Forum: New recruits!   Posted: 10/05/2018 12:31:05   Subject: Dowsing for secret underground tunnels etc.
[quote="Roger L"]If you use 3ft. rods with the long leg down you have to hold the rod in a different way which would stop it freely rotating. holding the short leg the weight is in the long rod so all
Topic: Dowsing for secret underground tunnels etc.
lozz

Forum: New recruits!   Posted: 10/05/2018 11:17:52   Subject: Dowsing for secret underground tunnels etc.
Why are the L shaped rods usually held so's the long bit it horizontal and not vertical?

Lozz.
Topic: Dowsing for secret underground tunnels etc.
lozz

Forum: New recruits!   Posted: 09/05/2018 19:48:09   Subject: Dowsing for secret underground tunnels etc.
Double blind test.

Lozz.
Topic: Stenlight question
lozz

Forum: Lamps & Lighting   Posted: 26/04/2018 13:42:38   Subject: Stenlight question
[quote="Andy Mears"]Hence the term "idiot diode" fitted across the power rails to pop the fuse when said event occurs. I had a mate who used to repair a lot of CB radios. When he got one where they ha
Topic: Stenlight question
lozz

Forum: Lamps & Lighting   Posted: 26/04/2018 10:18:21   Subject: Stenlight question
Flat -ve

Pointy +ve

According to their website.

Lozz.
Topic: Communicating in shafts
lozz

Forum: General Chat   Posted: 18/03/2018 11:33:13   Subject: Communicating in shafts
The main problems with PMR radios used in underground exploration is mainly down to the fact that it's basically line of sight and low power communication and the fact that ideally the antennas being
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