OzArch Google Group

Bipolar Cores

be...@ispdr.net.au (Beth White) — Fri, 04 Dec 2009 06:01:22 UT

Hi,
I'm wondering if anyone has looked at how we distinguish bipolar cores from
bipolar flakes.
With thanks in advance,
Beth White

Re: {OzArch} Re: Can anyone confirm what this is?

i...@jcis.net.au (IainS) — Thu, 03 Dec 2009 21:21:59 UT

It could of course be ballast or from another artillery piece (e.g.
such as would be mounted in a warship)

Iain

RE: {OzArch} Re: Can anyone confirm what this is?

g...@tpg.com.au (Graham Wilson) — Thu, 03 Dec 2009 09:06:27 UT

Sean,

Jane's summation is pretty much spot on. The light-weight nature of the
field piece shown would not rate above a 6-pdr and therefore not capable of
firing your shell. The field piece illustrated may have been one of the
"two very elderly brass (bronze) 6pdr cannon mounted on wooden carriages,

RE: {OzArch} Re: Can anyone confirm what this is?

ja...@ainsworthheritage.com.au (Jane Ainsworth) — Thu, 03 Dec 2009 04:31:11 UT

Hi Sean,

Apologies - I should have looked at the original email for the spec's!

If the ball has a diameter of c.110mm (4.33 inchs), then it is closest to
the size shot which would have been fired from a 9 or 12 pounder cannon,
depending on the age of the shot (as shot windage was altered at various

Re: {OzArch} Re: Can anyone confirm what this is?

sean.win...@gmail.com (Sean winter) — Thu, 03 Dec 2009 04:24:59 UT

The ball weighs approximately 7.25 pounds, but that is without the shot and
sulphur that would have been inside it, which would have increased its
weight, possibly by another half?

On Thu, Dec 3, 2009 at 12:17 PM, Jane Ainsworth <

RE: {OzArch} Re: Can anyone confirm what this is?

ja...@ainsworthheritage.com.au (Jane Ainsworth) — Thu, 03 Dec 2009 04:17:47 UT

Hi Sean,

The gun in the picture doesn't look very big, possibly not much larger than
a 6 or 8 pounder field gun. How much does the cannon ball weigh in pounds?
That will give us a good starting point to figure it out.

Kind regards,

Jane

Jane Ainsworth

Ainsworth Heritage

Re: {OzArch} Re: Can anyone confirm what this is?

sean.win...@gmail.com (Sean winter) — Thu, 03 Dec 2009 03:59:43 UT

Thanks to everyone who replied I appreciate it.

Now, the next question is, could the gun in the attached 1860s photo have
fired it?

Thanks

Sean Winter

PhD Candidate

Archaeology

M405

University of Western Australia

35 Stirling Highway

Crawley

WA 6009

p (w): 6488 4298

Indigenous site complex at Red Hill

zohares...@bigpond.com (zoharesque) — Thu, 03 Dec 2009 03:23:40 UT

Forwarded on behalf of Claire Smith
______________________________ _________________
Dr Alice Gorman
Department of Archaeology
Flinders University
GPO Box 2100 Adelaide 5001
Mobile: 0428 450 418
[link]
______________________________ _________________

Re: {OzArch} Can anyone confirm what this is?

camhartn...@gmail.com (Cameron Hartnell) — Wed, 02 Dec 2009 15:21:42 UT

I showed the photo to an archaeology student here at Michigan Tech who
has worked on a historic cannon manufacturing plan in NY and looked
specifically into cannon balls. He agreed entirely with your
assessment Graham.

Cameron Hartnell

RE: {OzArch} Re: Can anyone confirm what this is?

teenyweenys...@hotmail.com (Susie Allia) — Tue, 01 Dec 2009 21:56:07 UT

Sean,

You should ask Shane Burke, I do recall he found similar artefacts during his excavations in Fremantle for Notre Dame University. He has undertaken numerous historical excavations in Western Australia (especially Perth, Peel region and Fremantle) and is always willing to help others – give him a call.

RE: {OzArch} Can anyone confirm what this is?

g...@tpg.com.au (Graham Wilson) — Tue, 01 Dec 2009 08:35:21 UT

Sean,

Your object would appear to be a cast iron artillery shell, possibly for a
12- or 14-pdr (naval gun?). The hole is for the fuse - the shells were
designed to explode in mid-air and disperse shrapnel. The attached photo
shows a smaller 90mm version. The shells are sometimes narked with a

Re: {OzArch} Re: Can anyone confirm what this is?

shaun.cann...@achm.com.au (Shaun Canning) — Tue, 01 Dec 2009 08:26:08 UT

Bowling ball for the digitally challenged?

Dr Shaun Canning
Director
ACHM Vic Pty Ltd
0400 204536

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Re: {OzArch} Can anyone confirm what this is?

zohares...@bigpond.com (zoharesque) — Tue, 01 Dec 2009 07:54:31 UT

Space junk!

RE: {OzArch} Can anyone confirm what this is?

deanmul...@live.com.au (Dean Mullen) — Tue, 01 Dec 2009 05:39:49 UT

Possibly a 19th century grenade?

To: ozarch@googlegroups.com

Hi There

Does anyone have any idea what the artefact in the attached picture is? While excavating at Fremantle Prison yesterday we uncovered four heavy metal spheres. They have a diameter of 110mm and weigh approximately 3.3kg. They are hollow with a single 17mm circular hole and a separate 25mm circular marking.

Can anyone confirm what this is?

sean.win...@gmail.com (Sean winter) — Tue, 01 Dec 2009 04:19:28 UT

Hi There
Does anyone have any idea what the artefact in the attached picture is?
While excavating at Fremantle Prison yesterday we uncovered four heavy metal
spheres. They have a diameter of 110mm and weigh approximately 3.3kg. They
are hollow with a single 17mm circular hole and a separate 25mm circular