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Bitcoin Hash Calculator use to calculate the profitability of Bitcoin and the tool to find good return bitcoin miners to buy. You can easily calculate how many Bitcoins mines with your hash rates based on difficulties. flyingbtc.com/member.php
Currently auctioning off some rare, unreleased 1980s toys from Coleco's Sectaurs line.
Closeup of Bodyball's right leg joint
From a recent session with the organizers of CURRENT, a multidisciplinary, intersectional, music and electronic art symposium working with women and non-binary artists in Vancouver, BC and beyond. Tickets & info: www.facebook.com/events/213683955891661/
Check out more coverage at Discorder Magazine & it was great to see the Vancouver Art Book Fair sponsor!
Scenes from COSI On Wheels' "Current Conditions" science outreach program. This high-energy science education program travels to elementary schools in Ohio and neighboring states.
COSI is Columbus, Ohio's dynamic Center of Science and Industry. For more information, please visit www.cosi.org.
Current and former bridges across the Burdekin River from eastern or southern side
The former Burdekin River Rail Bridge is a metal truss bridge running parallel to the current bridge and was designed to carry the Great Northern Railway over the Burdekin River at Macrossan in 1899.
The Great Northern Railway was intended principally to connect the important goldfield at Charters Towers to the port of Townsville, although it was also of great value to the pastoral industry and the general development of North Queensland. In August 1877 the Queensland Government approved the first stretch of line to the top of the Haughton Range. The line to Mingela (formerly Ravenswood Junction) was opened on 9 November 1881, to Macrossan on 24 July 1882 and to Charters Towers on 14 December 1882.
In order to cross the Burdekin River, the line was carried over a road bridge at Macrossan which had been opened for traffic in mid-1879 and was converted for railway use in 1881. A temporary line was laid on the upstream side to enable the passage of freight from November 1882 even before work was completed. However, this bridge was low level and was frequently under water during the wet season, disrupting traffic. On 22 March 1890 a major flood covered the bridge to a depth of 55 feet (17 m). It was clearly necessary to construct a higher bridge and a decision was made to do so, though not implemented for some years after this. The new bridge was designed while Henry Charles Stanley was Chief Engineer for Railways. Stanley was an important early engineer in Queensland. He was born and trained in Scotland and was appointed to Queensland Railways in 1863. After working as chief engineer on several lines, he became responsible for the whole colony in 1892. During the 1890s a number of large metal truss rail bridges were constructed and crossed major streams making the connection of important towns and resources possible. In this way they were vital to the operation of the transport system and the development of the state as a whole. Many of these early bridges have since been replaced.
A contract for the Macrossan bridge (at a projected cost of £52,143) and a 3-mile (4.8 km) deviation was let to Swanson Brothers on 26 May 1896. Although completion was planned for 1897, the bridge was not finished until 17 January 1899 and, after tests, it was passed for use by the Government Inspector for Bridges in March 1899. At the time of its construction, it was one of the largest bridges in Queensland and was the last of the series of its type built.
The completed bridge was 3 metres (9.8 ft) above the highest known flood level. Its six 250-foot (76 m) steel spans were supported on piers and basalt cutwater quoins based on rock . There were four 50-foot (15 m) continuous plate girders on each side and 434 feet (132 m) of timber trestle. The track was supported on the lower chord, the floor completely decked and a substantial handrail provided. However, despite its size, the bridge was limited to carrying an 8-ton axle load. It was thought that the problem lay not with the bridge itself but rather with the timber approaches. These were strengthened by 1937 and the bridge was then used by all classes of steam locomotives.
Although diesel locomotives used the bridge from 1953, the bridge could not be economically strengthened to take two coupled diesel locomotives. In 1961 work began on a new bridge upstream. This new bridge was opened on 16 May 1964. It was similar in construction to the old bridge and because it is located close to the alignment of the old bridge it was not economically feasible to remove the old bridge without risk of damage to the new. The old bridge was decommissioned and the timber approach spans totalling 434 feet (132 m) on the eastern side have been removed.
*Wikipedia
That's what I love about reading: one tiny thing will interest you in a book, and that tiny thing will lead you onto another book, and another bit there will lead you onto a third book. It's geometrically progressive-all with no end in sight, and for no other reason than sheer enjoyment. - from the book
"Asian American Modern Art Shifting Currents 1900 - 1970" at de Young Museum, San Francisco, California, October 25 - January18, '09
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