Washington’s #LincolnMemorial honours the United States’ 16th president, Abraham Lincoln. Lincoln’s many accomplishments include leading the US through the civil war and delivering the Emancipation Proclamation which led to the abolition of slavery. #nspoli#July4th#HappyJuly4th
Ground was broken for the foundation of the Lincoln Memorial on February 12, 1914. Because the memorial was to be built on drained and filled land, the memorial’s foundation had two parts. #nspoli
The sub-foundation is made up of 122 solid, poured concrete piers with steel reinforcing rods anchored in bedrock. The upper-foundation is a second series of piers resting on the primary columns. #nspoli
The top piers are all joined together by poured concrete arches that form the floor of the memorial, later covered with a sheathing of marble. The foundation work was completed in May 1915. #nspoli
Work on the memorial slowed in 1917 when the United States entered WWI and there were labour and material shortages.
Stones from all over the US were used to symbolize the reunification of the nation after the civil war: The terrace walls and lower steps are... #nspoli
...granite blocks from Massachusetts. The upper steps, outside facade, and columns are marble blocks from Colorado. The interior walls and columns are Indiana limestone. The floor is pink Tennessee marble. The ceiling tiles are Alabama marble. #nspoli
The Lincoln statue was assembled from 28 pieces of Georgia marble in 1919-1920. It weighs 175 tons.
The statue was originally going to be 12 feet tall (sitting) but it was decided that the statue would be lost in such a huge building so they made it 19 feet tall. #nspoli
If the statue could stand, it would be 28 feet tall. Steel struts were added beneath the floor in 1918 to support the added weight from the larger statue.
In 1921 roadways and walks were built, trees and shrubberies were planted, lawns seeded... #nspoli
...and huge, old boxwoods were transplanted to the memorial grounds.
The memorial’s 36 Doric columns represent the 36 states of the Union at the time of Lincoln's assassination in 1865. #nspoli
The memorial was dedicated on May 30, 1922. 50,000 people attended the ceremonies, including hundreds of Civil War veterans and Robert Todd Lincoln, the president's only surviving son. #nspoli
The Lincoln Memorial has been the setting for many famous scenes in US history, including Martin Luther King Jr.'s "I have a dream" speech.
Happy #July4 to our American friends and colleagues. #nspoli#HappyJuly4th
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For example, an e-car has 183 pounds of copper wiring in it because copper is used in every major component from the motor to the inverter and the electrical wiring. There is about four times more copper in an e-car than in a car with an internal combustion engine.
There are about 400 electric cars on Nova Scotia roads - a total of over 73,000 pounds of copper!
An electric car uses 25-50 grams of silver, so Nova Scotia’s 400 e-cars contain about 15,000 grams of it.
Concrete is a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement. (The terms cement and concrete are often used interchangeably, but cement is actually an ingredient of concrete... #nspoli
...Cement is the glue that holds concrete together.)
Reinforced concrete means the concrete is poured over a frame, usually steel bars, that give the structure greater strength. #nspoli
The short answer is yes, sinkholes are real but no, they are not a major risk and should not prevent you from enjoying outdoor activities.
Most natural sinkholes are caused by groundwater naturally eroding rocks like gypsum, salt and limestone which are water-soluble. #nspoli
The water erodes the rock, leaving an underground cavern. Eventually, the weight of the rock and earth above the cavern causes the sinkhole to form. Sinkholes can form either gradually (i.e. a small depression appears and perhaps grows larger over time) or by sudden collapse.
The New Campbellton coal mine was opened in 1862 by Charles J. Campbell, a former Member of Parliament, Member of the Legislative Assembly and executive council member. The community had been named Kelly’s Cove but was changed to New Campbellton in 1862 in honour of Mr. Campbell.
A sample of New Campbellton’s coal was sent to the 1865 Dublin Exhibition and “was very favorably noticed by the Judges,” according to a report. #nspoli#cbpoli#novascotia#capebreton#nshistory
Mining built #NovaScotia! #Halifax was founded in 1749 and its first court house is reported to have been built by 1754 on the northeastern corner of Buckingham + Argyle streets. After the building burned in 1789, the courts were temporarily housed in various buildings. #nspoli
In April 1851 a bill to provide Halifax with a county court house was passed. Mr. H.G. Hill, a prominent #Halifax architect, prepared a plan for a wooden building.
However, since the records of the county, wills, deeds and other papers of public office were... #nspoli#novascotia
...to be stored in the court house, it was important that the building be fire-proof. Also, a number of serious fires in #Halifax in 1857 led to the passage of a bylaw that required large buildings be made of stone or brick, so Hill's plans for a wooden building were abandoned.
The Sullivan Creek #coal mine, before and after!
It's one of several mines reclaimed around #AlderPoint#CapeBreton in the late 1900s/early 2000s - examples of how mining makes temporary use of land and then land can be used other ways. #nspoli#cbpoli#novascotia@JaimeBattiste
The first mine in the area was the Scotia Mine, or #NovaScotia Steel & Coal Company No. 4 Colliery, on Toronto Road, which operated on the Sydney Main (Harbour) Seam from 1915 to 1921. #nspoli#cbpoli#novascotia@JaimeBattiste
Coal quality and structural issues (including water inflow) plague the Harbour Seam west of Florence so upon closure of the colliery, production on the Harbour Seam was limited to the Company’s No. 3 Colliery in Florence, which had opened in 1902... #nspoli#cbpoli#novascotia