HDTenEightyP/NetNews huggingface dataset:
From: dave@eram.esi.COM.AU (Dave Horsfall)
Newsgroups: aus.radio.amsat
Subject: AO-13 TRANSPONDER SCHED CHANGE
Date: 17 Nov 92 02:33:04 GMT
Distribution: aus
Organization: Pacific ESI, Sydney, AUSTRALIA

HR AMSAT NEWS SERVICE BULLETIN 319.01 FROM AMSAT HQ
SILVER SPRING, MD NOVEMBER 14, 1992   BID:$ANS-319.01
TO ALL RADIO AMATEURS BT

G3RUH Wants To Remind All AO-13 Users Of Transponder Schedule Change

Magnetorquing from spacecraft attitude Blon/Blat of 180/0 to 210/0 will
commence on Saturday 21-Nov-92 at 23:58 UTC, Orbit 3400 (MA=224), and
will continue for 4 perigees.

Estimated interim attitudes will be (+/- 5 degrees):

Orbit Blon/Blat Orbit Blon/Blat Orbit Blon/Blat Orbit Blon/Blat
===============================================================
 3401  190/-5    3402   197/-3   3403  203/-2    3404  210/0

The new schedule will be uploaded during Mode-L, Orbit 3404.  So 3404
(only) will contain two Mode J/L/S sessions: MA 130-160 and 180-210.

Magnetorquing is not an exact science, and during this time there is (and
always has been) the possibility of unnanounced temporary operational
changes to facilitate dealing with problems arising.  In the past this has
included transponders OFF, and mode changes.

Operational plans for 1993 are being finalized and will be announced
shortly.

The upcoming AO-13 operating schedule is as follows:

L G3RUH/DB2OS/VK5AGR  ***  Future AO-13 Transponder Schedule ***
Mode-B  : MA   0 to MA 180 !     from  1992 Nov 23 - Dec 14/21
Mode-S  : MA 180 to MA 190 !<- S transponder; B trsp. is OFF!
Mode-LS : MA 190 to MA 195 !<- S beacon + L transponder
Mode-JL : MA 195 to MA 210 !        Blon/Blat 210/0
Mode-B  : MA 210 to MA 256 !   Modes J/L/S OFF Dec 14 - 21
Omnis   : MA 245 to MA  80 !  Move to attitude 130/0, Dec 21

Please don't uplink on Mode B during MA 180-190 because it will interfere
with Mode S operations.

Don't rely on gossip and rumour!  Continuous up-to-date information about
AO-13 operations is always available on the beacons, 145.812 MHz, 435.658
MHz and 2400.646 MHz in CW, RTTY and 400 bps PSK.

-- 
Dave Horsfall (VK2KFU)         VK2KFU @ VK2RWI.NSW.AUS.OC
dave@esi.COM.AU                ...munnari!esi.COM.AU!dave
           Disclaimer: "Me, speak for us?"
From: dave@eram.esi.COM.AU (Dave Horsfall)
Newsgroups: aus.radio.amsat
Subject: Orbital Elements  319.MISC
Date: 17 Nov 92 02:33:03 GMT
Distribution: aus
Organization: Pacific ESI, Sydney, AUSTRALIA

HR AMSAT ORBITAL ELEMENTS FOR MANNED AND MISCELLANEOUS SATELLITES
FROM N3FKV  HEWITT, TX   November 14, 1992  BID:$ORBS-319.M
TO ALL RADIO AMATEURS BT

Satellite: MIR
Catalog number: 16609
Epoch time:      92317.59291287
Element set:     697
Inclination:       51.6247 deg
RA of node:       226.1232 deg
Eccentricity:    0.0002660
Arg of perigee:    64.2367 deg
Mean anomaly:     295.8880 deg
Mean motion:   15.55807400 rev/day
Decay rate:     1.7202e-04 rev/day^2
Epoch rev:           38536
Checksum:              313

Satellite: HUBBLE
Catalog number: 20580
Epoch time:      92317.74465609
Element set:     955
Inclination:       28.4701 deg
RA of node:        18.4488 deg
Eccentricity:    0.0004368
Arg of perigee:   293.3438 deg
Mean anomaly:      66.6691 deg
Mean motion:   14.91966822 rev/day
Decay rate:      2.282e-05 rev/day^2
Epoch rev:           13915
Checksum:              328

Satellite: GRO
Catalog number: 21225
Epoch time:      92317.40903987
Element set:     747
Inclination:       28.4607 deg
RA of node:        67.1559 deg
Eccentricity:    0.0006018
Arg of perigee:   140.8001 deg
Mean anomaly:     219.3022 deg
Mean motion:   15.63106556 rev/day
Decay rate:     2.5079e-04 rev/day^2
Epoch rev:            9116
Checksum:              285

Satellite: SARA
Catalog number: 21578
Epoch time:      92313.63557548
Element set:     384
Inclination:       98.5008 deg
RA of node:        27.6211 deg
Eccentricity:    0.0004417
Arg of perigee:   239.9313 deg
Mean anomaly:     120.1437 deg
Mean motion:   14.38016491 rev/day
Decay rate:      1.287e-05 rev/day^2
Epoch rev:            6902
Checksum:              292

Satellite: UARS
Catalog number: 21701
Epoch time:      92313.52772815
Element set:     231
Inclination:       56.9874 deg
RA of node:       345.9305 deg
Eccentricity:    0.0004879
Arg of perigee:    95.9682 deg
Mean anomaly:     264.1908 deg
Mean motion:   14.96535090 rev/day
Decay rate:      -3.37e-06 rev/day^2
Epoch rev:            6326
Checksum:              319

Satellite: FREJA
Catalog number: 22161
Epoch time:      92313.52587869
Element set:      87
Inclination:       63.0084 deg
RA of node:       333.5488 deg
Eccentricity:    0.0770985
Arg of perigee:   263.2127 deg
Mean anomaly:      88.0657 deg
Mean motion:   13.21496935 rev/day
Decay rate:       4.79e-06 rev/day^2
Epoch rev:             439
Checksum:              331

-- 
Dave Horsfall (VK2KFU)         VK2KFU @ VK2RWI.NSW.AUS.OC
dave@esi.COM.AU                ...munnari!esi.COM.AU!dave
           Disclaimer: "Me, speak for us?"
From: dave@eram.esi.COM.AU (Dave Horsfall)
Newsgroups: aus.radio.amsat
Subject: Orbital Elements  319.MICROS
Date: 17 Nov 92 02:33:01 GMT
Distribution: aus
Organization: Pacific ESI, Sydney, AUSTRALIA

HR AMSAT ORBITAL ELEMENTS FOR THE MICROSATS
FROM N3FKV  HEWITT, TX   November 14, 1992  BID:$ORBS-319.D
TO ALL RADIO AMATEURS BT

Satellite: UO-14
Catalog number: 20437
Epoch time:      92316.21761347
Element set:     690
Inclination:       98.6312 deg
RA of node:        36.7581 deg
Eccentricity:    0.0011702
Arg of perigee:   100.2880 deg
Mean anomaly:     259.9623 deg
Mean motion:   14.29694298 rev/day
Decay rate:       2.18e-06 rev/day^2
Epoch rev:           14628
Checksum:              309

Satellite: AO-16
Catalog number: 20439
Epoch time:      92313.63759408
Element set:     533
Inclination:       98.6358 deg
RA of node:        34.9002 deg
Eccentricity:    0.0012570
Arg of perigee:   108.5798 deg
Mean anomaly:     251.6752 deg
Mean motion:   14.29755601 rev/day
Decay rate:       2.26e-06 rev/day^2
Epoch rev:           14592
Checksum:              315

Satellite: DO-17
Catalog number: 20440
Epoch time:      92313.64756548
Element set:     532
Inclination:       98.6359 deg
RA of node:        35.0620 deg
Eccentricity:    0.0012446
Arg of perigee:   106.6765 deg
Mean anomaly:     253.5784 deg
Mean motion:   14.29884905 rev/day
Decay rate:       2.40e-06 rev/day^2
Epoch rev:           14593
Checksum:              317

Satellite: WO-18
Catalog number: 20441
Epoch time:      92313.47452093
Element set:     531
Inclination:       98.6388 deg
RA of node:        34.9381 deg
Eccentricity:    0.0012432
Arg of perigee:   106.8117 deg
Mean anomaly:     253.4432 deg
Mean motion:   14.29872843 rev/day
Decay rate:       2.29e-06 rev/day^2
Epoch rev:           14591
Checksum:              301

Satellite: LO-19
Catalog number: 20442
Epoch time:      92313.55992615
Element set:     532
Inclination:       98.6357 deg
RA of node:        35.1490 deg
Eccentricity:    0.0013637
Arg of perigee:   109.1110 deg
Mean anomaly:     251.1550 deg
Mean motion:   14.29958489 rev/day
Decay rate:       2.30e-06 rev/day^2
Epoch rev:           14593
Checksum:              300

Satellite: UO-22
Catalog number: 21575
Epoch time:      92315.71495435
Element set:     233
Inclination:       98.4954 deg
RA of node:        29.1016 deg
Eccentricity:    0.0006964
Arg of perigee:   227.7156 deg
Mean anomaly:     132.3435 deg
Mean motion:   14.36723444 rev/day
Decay rate:       2.82e-06 rev/day^2
Epoch rev:            6929
Checksum:              310

Satellite: KO-23
Catalog number: 22079
Epoch time:      92314.68912116
Element set:      85
Inclination:       66.0659 deg
RA of node:        66.5852 deg
Eccentricity:    0.0062040
Arg of perigee:   105.7896 deg
Mean anomaly:     254.9970 deg
Mean motion:   12.77678904 rev/day
Decay rate:       -2.0e-08 rev/day^2
Epoch rev:            1167
Checksum:              320

-- 
Dave Horsfall (VK2KFU)         VK2KFU @ VK2RWI.NSW.AUS.OC
dave@esi.COM.AU                ...munnari!esi.COM.AU!dave
           Disclaimer: "Me, speak for us?"
From: dave@eram.esi.COM.AU (Dave Horsfall)
Newsgroups: aus.radio.amsat
Subject: AMSAT OPERATIONS NET SCHEDS
Date: 17 Nov 92 02:33:06 GMT
Distribution: aus
Organization: Pacific ESI, Sydney, AUSTRALIA

HR AMSAT NEWS SERVICE BULLETIN 312.03 FROM AMSAT HQ
SILVER SPRING, MD NOVEMBER 7, 1992    BID: $ANS-312.03
TO ALL RADIO AMATEURS BT

AMSAT-NA Operations Net Schedule

AMSAT Operations Nets are planned for the following times.  Mode B Nets
are conducted on AO-13 on a downlink frequency of 145.950 MHz and the Mode
J/L Nets on a downlink of 435.970 MHz.

 Date           UTC    Mode     Phs     NCS     Alt

28-Nov-92       1550   B       217      VE2LVC  W9ODI
 6-Dec-92       1400   B       118      N7NQM   W5IU
19-Dec-92       1400   B       185      WB6LLO  W9ODI

Any stations with information on current events would be most welcome.  In
the unlikely event that either the Net Control Station (NCS) or the
alternate do not call on frequency, any participant is invited to act as
the NCS.

Slow Scan Television on AO-13

SSTV sessions will be held on Saturdays and Sundays (UTC).  Mode J on a
downlink of 435.980 MHz, and Mode B immediately after Mode J on 145.960
MHz.  OPS NETS will take priority so look for SSTV activity immediately
after they conclude.

-- 
Dave Horsfall (VK2KFU)         VK2KFU @ VK2RWI.NSW.AUS.OC
dave@esi.COM.AU                ...munnari!esi.COM.AU!dave
           Disclaimer: "Me, speak for us?"
From: dave@eram.esi.COM.AU (Dave Horsfall)
Newsgroups: aus.radio.amsat
Subject: WA3PSD PROVIDES WO-18 STATUS
Date: 17 Nov 92 02:33:05 GMT
Distribution: aus
Organization: Pacific ESI, Sydney, AUSTRALIA

HR AMSAT NEWS SERVICE BULLETIN 319.02 FROM AMSAT HQ
SILVER SPRING, MD NOVEMBER 14, 1992   BID: $ANS-319.02
TO ALL RADIO AMATEURS BT

WA3PSD Provides Current Status On WEBERSAT-OSCAR-18 (WO-18) 

As winter approaches, imaging on WO-18 is pushed farther south of the
magnetic equator.  In upcoming weeks, expect to see images of Northern
Australia, the coast of Peru and Chile, the southern tip of India and Lake
Victoria being generated.  Additionally, a group of students at Weber State
University (WSU) have chosen to develop an extensive telemetry analysis
program for their senior project.  There are many gigabytes of telemetry
downloaded from WO-18 on file at WSU because students have virtually never 
missed capturing data on at least one pass per day since launch.  A program
incorporating a complete statistics package, and which is also capable of
extracting and analyzing individual telemetry parameters from the mass of
data on file should prove valuable, far beyond completing these senior's
project requirement for graduation.

One of the areas which WA3PSD hopes to see the students at WSU explore is
the performance of the individual battery cells in the total battery pack
and to see how it compares with that observed immediately after launch.  This
will be valuable data for all the MICROSATs and all future OSCARs.  WA3PSD
comments that it will be interesting to see how far the the student team
goes with their project.  

[The AMSAT News Service (ANS) would like to thank Chris Williams (WA3PSD)
 of WSU for this bulletin item.]

-- 
Dave Horsfall (VK2KFU)         VK2KFU @ VK2RWI.NSW.AUS.OC
dave@esi.COM.AU                ...munnari!esi.COM.AU!dave
           Disclaimer: "Me, speak for us?"
From: dave@eram.esi.COM.AU (Dave Horsfall)
Newsgroups: aus.radio
Subject: Re: antennae for scanning on 2m/70cm/23cm
Date: 17 Nov 92 04:03:11 GMT
Distribution: aus
Organization: Pacific ESI, Sydney, AUSTRALIA

In article <1992Nov17.022744.7782@fawlty.towers.oz.au>,
    steve@fawlty.towers.oz.au (Steve Blanche) writes:

| The broadcast wont tell you anything, until after A.R. & ARA are released

No - we frequently get stuff on the BC before AR (and ARA) get to print.
For example, you couldn't get more timely than that "live cross" a few
weeks back, when we phone-patched the SEANET '92 announcement.

Admittedly, that announcement was short on detail, but be assured that
Richard VK2SKY has just as much of a nose for news as I did...

| or depending on which one hits the street first, I would have preferred

Ah yes, in his rush to scoop the news, "Mr. Ed" (the talking horse)
sometimes has to "clarify" items.  May as well listen to the "true"
horse first :-)

| to tell the person who asked the question, to join the WIA and then he
| would be getting A.R. instead of having to buy ARA, but I doubt he could

Which brings to mind a question - why do people join, yet opt out of AR?
To me, that's the most valuable part of the membership...

| As for changes, I doubt anything the senator mentioned would be changed
| those poli's get enough egg on face, without looking for more.

Some of those details should be clarified.  As a "K" call, I'm a little
uneasy about that vague "Intermediate/Novice" class...  And of course,
as Richard has already pointed out, the new provisions have to be
painstakingly cross-checked against the RadCom Act - there is at least
one NSW Amateur who did a number on the DoTC...

-- 
Dave Horsfall (VK2KFU)         VK2KFU @ VK2RWI.NSW.AUS.OC
dave@esi.COM.AU                ...munnari!esi.COM.AU!dave
           Disclaimer: "Me, speak for us?"
Newsgroups: aus.auug
From: petersc@dude ()
Subject: QUUG meeting
Organization: Stallion Technologies
Date: Wed, 18 Nov 1992 07:42:31 GMT
X-Newsreader: Tin 1.1 PL5

Tim has asked me to post a QUUG Monthly reminder on his behalf:

Last month QUUG voted to formalize its organisation as the Queensland
Chapter of the AUUG.

This months meeting will be held at the Regatta Hotel, Tuesday November
24th, 7.00pm.

Speakers this month:

Antonio Padilha:  Presentation on Stallion Technologie's EasyReach.
EasyReach is Stallion's answer to the next generation of communications
controllers.  This product is one of the worlds leading mlti-user
networking products.

In addition a short presentation will also be given on Osiris's
Osfax product and their recently launched developments program. The
Developments program is a third party intergation program to assist
Queensland's Var in intergrating the new fax technologies into their
vertical applications.

We will also set the 1992/93 agenda for QUUG and begin to encourage
active participation of the membership.

As usual savories and an open bar will be provided for your enjoyment.

Enquiries to Timothy Butterfield, fax 07 279 0249, phone 07 279 0149.
Newsgroups: aus.auug
From: michi@ptcburp.ptcbu.oz.au (Michael Henning)
Subject: Re: QUUG meeting
Organization: Pyramid Technology Corporation
Date: Wed, 18 Nov 1992 23:15:24 GMT

petersc@dude () writes:

Thanks for the reminder. You may want to have a look at your "From: "
address though. "petersc@dude ()" is not likely to work for replies :-)

							Michi.
-- 
      -m------- Michael Henning                 +61 75 950255
    ---mmm----- Pyramid Technology              +61 75 722475 FAX
  -----mmmmm--- Research Park, Bond University  michi@ptcburp.ptcbu.oz.au
-------mmmmmmm- Gold Coast, Q 4229, AUSTRALIA   uunet!munnari!ptcburp.oz!michi
From: beaumont@library.adelaide.edu.au (Stephen Beaumont)
Newsgroups: aus.conserve
Subject: Re: Trees & whipper-snippers
Date: 17 Nov 1992 03:30:50 GMT
Organization: Barr Smith Library, University of Adelaide, South AUSTRALIA
NNTP-Posting-Host: library.adelaide.edu.au

>Does anyone have any evidence of a tree being killed by this
>practice? Do other councils use this method of trimming around
>trees?

Burnside Council (SA) has, over many years, alternated between planting
new trees and ring-barking them with a whipper-snipper.  Phone calls to
the Council were much less effective that keeping the base of the trees
trimmed myself.

Newsgroups: aus.conserve
From: pel@resntl.bhp.com.au (Paul Osborn)
Subject: Re: Trees & whipper-snippers
Organization: BHP Research - Newcastle Labs
Date: Fri, 20 Nov 1992 05:37:17 GMT

In article <721967125.AA00303@csource.oz.au> Peter.Hogan@f369.n633.z3.fidonet.org (Peter Hogan) writes:
>From: Peter.Hogan@f369.n633.z3.fidonet.org (Peter Hogan)
>Subject: Trees & whipper-snippers
>Date: Sun, 15 Nov 1992 17:57:24
>My local council (Collingwood) uses a whipper-sniper to trim
>around the base of trees in the parks. It can be seen that the
> whipper-snipper is damaging the bark at the base of the tree.
>This damage is quite serious with the soft barked Melaluecas. I
>am concerned that if the practice is continued the trees will
>eventually be ring-barked, killing the trees.
>Does anyone have any evidence of a tree being killed by this
>practice? Do other councils use this method of trimming around
>trees?
>
> * Origin: City Limits -Education,Australia 6 lines (3:633/369)

I have inadvertently killed small trees myself by whippersnipping (
whippersnippering ?) but it usually only happens with reasonably young trees.
-------- PAUL R OSBORN, Research Scientist, Sensing Technology --- /\/\ --
                BHP Research - Newcastle Laboratories, Australia  / / /\
Snail   :       P.O. Box 188, Wallsend, NSW 2287                 / / /  \
Tel     :       +61 49 51-0605  Fax : +61 49 50-2126            / / / /\ \
Telex   :       AA 28768                                        \ \/ / / /
Internet:       pel@resntl.bhp.com.au                            \  / / /
----------------------------------------------------------------- \/\/\/ -
Newsgroups: aus.conserve
From: guy@trofis.tfrc.csiro.au (Guy Carpenter)
Subject: Re: Trees & whipper-snippers
Organization: CSIRO Tropical Forest Research Centre
Date: Sat, 21 Nov 92 21:45:13 GMT

Peter.Hogan@f369.n633.z3.fidonet.org (Peter Hogan) writes:

>My local council (Collingwood) uses a whipper-sniper to trim
>around the base of trees in the parks.

>Does anyone have any evidence of a tree being killed by this
>practice? Do other councils use this method of trimming around
>trees?

No evidence, but Bourke's Back Yard had a bit on this some months ago:
showed some trees with bulges at the base where the bark had been damaged
and said it was quite possible to kill a tree this way.  I've seen
people use round-up on the grass around trees, but I don't think that's
a good idea either, since the chemicals in roundup are getting some
serious scrutiny these days.

Guy.

-- 
----------------------------------------------------------------------
CSIRO Tropical          P.O. Box 780             Work : (070) 91 1755
      Forest            Maunds Rd                Fax  : (070) 91 3245
      Research          Atherton Q 4883          Home : (070) 95 3309
From: Gosbell@FEDCMAC.EDC.RMIT.EDU.AU (Kerryn Gosbell)
Newsgroups: aus.conserve
Subject: Energy efficiency in higher education
Date: 24 Nov 92 00:01:48 GMT
Followup-To: aus.conserve
Organization: RMIT
NNTP-Posting-Host: kerryn.edc.rmit.oz.au

RMIT university in Melbourne is conducting research into the incorporation
of energy issues into tertiary education curriculum and energy use on
campus.

As the projects Research Assistant I am seeking to compile information
regarding these two areas of energy in tertiary institutions across the
world.

Topics covered in course curriculum could include for example:
	% Energy efficiency and conservation
	% Environmental and social impacts of energy
	% Energy economics / cost
	% Energy management
	% Renewable and alternative energy
	% Energy use
	% Design for energy efficiency

I am specifically seeking to identify examples of curriculum materials and
activities such as research projects, guest speakers, field visits and
information sources used, but am also interested in finding out what
contexts are set for students. ie. Why is energy conservation worth
pursuing?

In addition, I am seeking information regarding any work that has been
undertaken which looks at the actual energy consumption of tertiary
institutions and at ways of reducing this consumption.

If anyone has information or relevant contacts in either of these two areas
I would appreciate hearing from them either through my E-mail address or by
sending material to me via the postal address below.

Thanks!

Kerryn Gosbell
Department of Planning, Policy & Landscape
RMIT
GPO Box 2476V
Melbourne, Victoria, Australia  3001
From: Peter.Hogan@f369.n633.z3.fidonet.org (Peter Hogan)
Newsgroups: aus.conserve
Subject: Trees & whipper-snippers
Date: Sun, 15 Nov 1992 17:57:24

My local council (Collingwood) uses a whipper-sniper to trim
around the base of trees in the parks. It can be seen that the
 whipper-snipper is damaging the bark at the base of the tree.
This damage is quite serious with the soft barked Melaluecas. I
am concerned that if the practice is continued the trees will
eventually be ring-barked, killing the trees.
Does anyone have any evidence of a tree being killed by this
practice? Do other councils use this method of trimming around
trees?

 * Origin: City Limits -Education,Australia 6 lines (3:633/369)
Newsgroups: aus.conserve
From: powell@syd.dwt.csiro.au (Powell Heuer)
Subject: Re: Trees & whipper-snippers
Reply-To: P.Heuer@syd.dwt.csiro.au
Organization: CSIRO Div. of Wool Technology, Ryde, Australia
Distribution: aus
Date: Wed, 18 Nov 1992 01:56:59 GMT


In article <721967125.AA00303@csource.oz.au>,
Peter.Hogan@f369.n633.z3.fidonet.org (Peter Hogan) writes:
|>
|>My local council (Collingwood) uses a whipper-sniper to trim
|>around the base of trees in the parks. It can be seen that the
|> whipper-snipper is damaging the bark at the base of the tree.
|>This damage is quite serious with the soft barked Melaluecas. I
|>am concerned that if the practice is continued the trees will
|>eventually be ring-barked, killing the trees.
|>Does anyone have any evidence of a tree being killed by this
|>practice? Do other councils use this method of trimming around
|>trees?

I've no evidence.  However, I have seen places where a plastic protection
device has been placed around the base of trees, presumably to avoid
this damage.

The device is a piece of spirally split plastic tube.  (I've seen
smaller versions used to hold bundles of loose cables neatly together.)
It is unwrapped so it can be placed around the base of the tree where it
coils itself up again.  Hopefully the split means that the bark still gets
sufficient ventilation.

------------------------------------------------------------------------
Powell Heuer                            E-Mail: P.Heuer@syd.dwt.csiro.au
CSIRO Division of Wool Technology       Phone : +61 2 809 9444
PO Box 7                                Fax   : +61 2 809 9476
Ryde NSW 2112 AUSTRALIA
From: gil@Gilsys.DIALix.oz.au (Gil Hardwick)
Newsgroups: aus.conserve
Subject: Trees & whipper-snippers
Distribution: world
Date: Tue, 17 Nov 92 01:28:25 GMT
Organization: STAFF STRATEGIES - Anthropologists & Training Agents


In article <721967125.AA00303@csource.oz.au> Peter.Hogan@f369.n633.z3.fidonet.org writes:

 > My local council (Collingwood) uses a whipper-sniper to trim
 > around the base of trees in the parks. It can be seen that the
 >  whipper-snipper is damaging the bark at the base of the tree.
 > This damage is quite serious with the soft barked Melaluecas. I
 > am concerned that if the practice is continued the trees will
 > eventually be ring-barked, killing the trees.
 > Does anyone have any evidence of a tree being killed by this
 > practice? Do other councils use this method of trimming around
 > trees?

There has already been an outcry in a number of the different local
government areas here in Perth over workers killing and damaging trees
with whipper-snippers.

Apart from the actual dead trees, however, the practice brings fungal
and borer infestations of the damaged trees due to their resultant
ill-health, so there is a flow-on effect as well which needs to be
monitored closely.

I understand Don Burke has also had something to say about it, and I
expect his people will have accumulated a great deal of information on
this very serious problem and what to do about it by now. Perhaps you
might snail mail them for advice.

--
Gil Hardwick                                      gil@Gilsys.DIALix.oz.au
Independent Consulting Ethnologist                            3:690/660.6
PERTH, Western Australia                                 (+61 9) 399 2401
   * * Sustainable Community Development & Environmental Education * *