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Monday, 16 March 2015

Day 20 - Mines, dams, power stations, mountains and lakes around Rosebery and Tullah

It was fine today, 5.5 degrees at the outset but climbing to 15 degrees during the day.  The sun was out from time to time too.

Rosebery is the home of MMG's Rosbery Mine.  It is a polymetalliferous, underground mine which produces annually, as concentrate, 80-85,000t of zinc, 22-24,000t of lead, 2300t of cathode copper and gold dore.  The latter is refined into gold bullion on the mainland.  The concentrates are railed to Burnie for export.  The ore is crushed, ground and then submitted to a flotation process.  The mine has been operating since 1936 and is right in the centre of Rosebery.

160315 Plaque commemorating 75 years of operations of the Rosebery
concentrator and the discovery of zinc at Rosebery in 1873
160315 MMG's surface operations at Rosebery
160315 MMG's surface operations at Rosebery 
160315 Mine tailings at Rosebery
Rosebery, in the valley of the mountains, has a population of just over 1000 people and is surrounded by mountains.  We have a key observation to make.  Rosebery's water is very soft and today we saw the source of that water.
160315 Mine tailings at Rosebery
We retraced our steps a bit today and visited the various dams, power stations, mountains and lakes around Rosebery and the township of Tullah. 

As usual, Mount Murchison seemed to be everywhere, so we were not surprised to come across a Murchison Dam on the Murchison River.  The water in this dam is redirected to Mackintosh Dam where there is a power station.  There was also a smaller dam supporting the Mackintosh called the Tullabardine Dam.



160315 Mount Black (520m) near Tullah township
160315 The spillway at Murchison Dam
160315 The Murchison River below the dam wall
160315 Lake Murchison
160315 Mount Farrell (712m) behind Tullah
160315 Power Station below Mackintosh Dam
160315 Lake Mackintosh 
160315  Mackintoish Dam's 870 metre long dam wall
160315 Lake Rosebery
Next dam we visited was the Bastyan Dam with its power station.


160315 The Bastyan Dam wall
160315 The power station at Bastyan Dam
160315 Water exiting the turbines at Bastyan Dam Power Station
160315 Downstream from the Power Station at Bastyan Dam
160315 Downstream from the Power Station at Bastyan Dam
However the highlight of the day was the trip around to the eastern side of Mount Murchison and on to Lake Plimsoll.  The foliage on this side of the mountain range was different, less rainforest, more heath and button grass. There were more visible mountains and valleys too.  Lake Plimsoll was spectacular as it nestled in between the mountains. 
160315 Looking towards Lake Plimsoll 
160315 Part of the eastern side of Mount Murchison, heath covered
160315 from the road to Lake Plimsoll.  Note less forest
160315 Lake Plimsoll - picture hardly does it justice
160315 Lake Plimsoll
160315 Lake Plimsoll (a right hand extension of the photograph above)
160315 Mt Murchison (1275 m) from its eastern side
The mountains may be big in Tasmania but some of their wildflowers are very small.


160315 A not so wild, wild flower - about one cm across


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