Hi All,

Concerning the mine collapse, would not a collapse give the same initial
direction of motion in all directions from the event whereas a quake would
create opposite motion on either side of rupture?  I have something on my NS
horizontal near the time that seems to build more slowly than a typical P
wave and is initially north down in tilt or southerly motion.  I'm at 1200
km from the event.

Randy
----- Original Message ----- 
From: 
To: 
Sent: Tuesday, August 07, 2007 02:00
Subject: Digest from 08/06/2007 00:01:22


>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 1                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Mine collaspe or Earthquake
> From:    
> Date:    Mon, 6 Aug 2007 14:30:17 -0600
>
> This is a multi-part message in MIME format.
>
> ------=_NextPart_000_0006_01C7D836.4F964430
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> charset="iso-8859-1"
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>
> Hi Folks,  I would like your opinion on the event.  070806.084840   4.0 =
> Utah
>
> First report on the news was it was an Earthquake, next report it was no =
> Earthquake but a mine collapse, third report one caused the other.
>
> I don't know enough about mine collapse.   Channel 2 News in Boise would =
> like your opinion.
>
> Thanks, Ted
> ------=_NextPart_000_0006_01C7D836.4F964430
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> 
>  charset=3Diso-8859-1">
> 
> 
> 
> 
> 
Hi Folks,  I would like your =
> opinion on the=20
> event.  070806.084840   4.0 Utah
> 
 
> 
First report on the news was it was an =
> Earthquake,=20
> next report it was no Earthquake but a mine collapse, third report one =
> caused=20
> the other.
> 
 
> 
I don't know enough about mine=20
> collapse.   Channel 2 News in Boise would like your=20
> opinion.
> 
 
> 
Thanks, Ted
>
> ------=_NextPart_000_0006_01C7D836.4F964430--
>
>
>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 2                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: Mine collaspe or Earthquake
> From:    "Jerry Payton" 
> Date:    Mon, 6 Aug 2007 15:36:54 -0500
>
> This is a multi-part message in MIME format.
>
> ------=_NextPart_000_004B_01C7D83F.9D8C10D0
> Content-Type: text/plain;
> charset="iso-8859-1"
> Content-Transfer-Encoding: 7bit
>
> Ted, I do not think a mine collapse would cause seismometer reading
> 1700-1800 km away, or farther.  We'll see if other stations recorded the
> event, as people come home tonight from work etc.
>
> I personally believe the EQ cause the collapse.  That is what is being
> reported on the national news services.
> Regards,
> Jerry
>
>
> ----- Original Message ----- 
> From: tchannel1@............
> To: psn-l@..............
> Sent: Monday, August 06, 2007 3:30 PM
> Subject: Mine collapse or Earthquake
>
>
> Hi Folks,  I would like your opinion on the event.  070806.084840   4.0
Utah
>
> First report on the news was it was an Earthquake, next report it was no
> Earthquake but a mine collapse, third report one caused the other.
>
> I don't know enough about mine collapse.   Channel 2 News in Boise would
> like your opinion.
>
> Thanks, Ted
>
> ------=_NextPart_000_004B_01C7D83F.9D8C10D0
> Content-Type: text/html;
> charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
> 
> 
>  charset=3Diso-8859-1">
> 
> 
> 
> 
> 
Ted, I do not think a mine collapse would cause seismometer reading =
>
> 1700-1800 km away, or farther.  We'll see if other stations =
> recorded the=20
> event, as people come home tonight from work etc.
> 
 
> 
I personally believe the EQ cause the collapse.  That is what =
> is being=20
> reported on the national news services.
> 
Regards,
> 
Jerry
> 
 
> 
 
> 
----- Original Message -----=20
> 
From:  title=3Dtchannel1@...............
> href=3D"mailto:tchannel1@............">tchannel1@............ 
> 
To:  href=3D"mailto:psn-l@..............">psn-l@.............. 
> 
Sent: Monday, August 06, 2007 3:30 PM
> 
Subject: Mine collapse or Earthquake
> 


> 
Hi Folks,  I would like your =
> opinion on the=20
> event.  070806.084840   4.0 Utah
> 
 
> 
First report on the news was it was an =
> Earthquake,=20
> next report it was no Earthquake but a mine collapse, third report one =
> caused=20
> the other.
> 
 
> 
I don't know enough about mine=20
> collapse.   Channel 2 News in Boise would like your=20
> opinion.
> 
 
> 
Thanks, Ted
>
> ------=_NextPart_000_004B_01C7D83F.9D8C10D0--
>
>
>
>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 3                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: Mine collaspe or Earthquake
> From:    =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= 
> Date:    Mon, 06 Aug 2007 21:14:52 +0000
>
> Hi
>
> There have been instances of there mines did trigger earthquakes, some
> up to mag 5.0. Once such insdent was recorded in South Africa few years
> ago. However, I can't tell in this case.
>
> USGS has listed this earthquake,
>
http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/uu00007535.php#detai=
> ls
>
> Regards.
>
> --=20
> J=F3n Fr=EDmann
> http://www.jonfr.com
> http://earthquakes.jonfr.com
> http://www.net303.net
> http://www.mobile-coverage.com/
>
>
>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 4                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: Mine collaspe or Earthquake
> From:    "Geoff" 
> Date:    Mon, 6 Aug 2007 15:20:05 -0700
>
> Yes, those mines are diamond mines
> typically very dangerous work because
> of a thing called Rock Bursts and
> a rock burst itself might appear as a 3
> or so earthquake.
> They are very deep hot dangerous misearable work
> from what i understand for those diamond miners.
> It is not uncommon for miners to die that way
> in South Africa. Here in Arizona they (Miners)
> even talk about Rock Bursts
> but i think they are worse the deeper you mine.
> I do not know of any Arizona Mines over a mile deep
> like they have in South Africa.
>
> Regards;
> geoff
>
> ----- Original Message ----- 
> From: "Jón Frímann" 
> To: 
> Sent: Monday, August 06, 2007 2:14 PM
> Subject: Re: Mine collaspe or Earthquake
>
>
> Hi
>
> There have been instances of there mines did trigger earthquakes, some
> up to mag 5.0. Once such insdent was recorded in South Africa few years
> ago. However, I can't tell in this case.
>
> USGS has listed this earthquake,
>
http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/uu00007535.php#details
>
> Regards.
>
> -- 
> Jón Frímann
> http://www.jonfr.com
> http://earthquakes.jonfr.com
> http://www.net303.net
> http://www.mobile-coverage.com/
>
> __________________________________________________________
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> Public Seismic Network Mailing List (PSN-L)
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> To leave this list email PSN-L-REQUEST@.............. with
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>
>
>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 5                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: Mine collaspe or Earthquake
> From:    =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= 
> Date:    Tue, 07 Aug 2007 01:45:48 +0000
>
> Hi
>
> BBC News has a intresting story about this insdent, also some
> information on other related incdents like this one.
>
> http://news.bbc.co.uk/2/hi/americas/6933790.stm
>
> Regards.
> --=20
> J=F3n Fr=EDmann
> http://www.jonfr.com
> http://earthquakes.jonfr.com
> http://www.net303.net
> http://www.mobile-coverage.com/
>
>
>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 6                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: closed loop folded pendulum
> From:    Barry Lotz 
> Date:    Mon, 6 Aug 2007 20:07:55 -0700 (PDT)
>
> --0-1607043524-1186456075=:29596
> Content-Type: text/plain; charset=iso-8859-1
> Content-Transfer-Encoding: 8bit
>
> Hi
>      Does anyone know where I could find the math for the sizing the
components for a possible closed loop folded pendulum based on ones given
sensor properties . I tried to email Dave Youden since He made reference to
it in 2003 but his address is old.
>   regards
>   barry
>
>
> --0-1607043524-1186456075=:29596
> Content-Type: text/html; charset=iso-8859-1
> Content-Transfer-Encoding: 8bit
>
> 
Hi
  
   Does anyone know where I could find the
math for the sizing the components for a possible closed loop folded
pendulum based on ones given sensor properties . I tried to email Dave
Youden since He made reference to it in 2003 but his address is
old.
  
regards
  
barry
  
 
> --0-1607043524-1186456075=:29596--
>
>
> .------ ------ ------ ------ ------ ------ ------ ------ ------ ------.
> | Message 7                                                           |
> '------ ------ ------ ------ ------ ------ ------ ------ ------ ------'
> Subject: Re: closed loop folded pendulum
> From:    ChrisAtUpw@.......
> Date:    Tue, 7 Aug 2007 00:10:45 EDT
>
>
> --part1_d45.fa8650d.33e94ac5_boundary
> Content-Type: text/plain; charset="US-ASCII"
> Content-Transfer-Encoding: 7bit
>
> In a message dated 2007/08/07, barry_lotz@............. writes:
>
> >    Does anyone know where I could find the math for the sizing the
> > components for a possible closed loop folded pendulum based on ones
given sensor
> > properties . I tried to email Dave Youden since He made reference to it
in 2003
> > but his address is old.
>
> Hi Barry,
>
>        See http://jclahr.com/science/psn/youden/index.html
>        There is a complete design of both the mechanical construction and
> circuits for the electronics.
>
>        Dave Youden can now be found at dyouden@.............
>
>        Regards,
>
>        Chris Chapman
>
>
> --part1_d45.fa8650d.33e94ac5_boundary
> Content-Type: text/html; charset="US-ASCII"
> Content-Transfer-Encoding: quoted-printable
>
> In a
me=
> ssage dated 2007/08/07, barry_lotz@............. writes:

> 

> 
 : 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">   Does anyone know
w=
> here I could find the math for the sizing the components for a possible
clos=
> ed loop folded pendulum based on ones given sensor properties . I tried to
e=
> mail Dave Youden since He made reference to it in 2003 but his address is
ol=
> d.


> 

> Hi Barry,

> 

>        See
http://jclahr.com/science/psn/youde=
> n/index.html

>        There is a complete design of both
the=20=
> mechanical construction and circuits for the electronics.

> 

>        Dave Youden can now be found at  =3D"mailto:dyouden@.............">dyouden@.............    

>     

>        Regards,

> 

>        Chris Chapman

>    
>
> --part1_d45.fa8650d.33e94ac5_boundary--
>
>
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> Public Seismic Network Mailing List (PSN-L)
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> To leave this list email PSN-L-DIGEST-REQUEST@.............. with
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