The Morris Street Engine House has been declared a municipal heritage property! #Halifax’s Fire Station #2, as it is also called, was built 1907-08 of reinforced concrete.
Here's the story! #nspoli@HFXFireHistory@HRMFireNews@hfxfire@HFXFirefighters@hfxgov@MikeSavageHFX
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
Sep 21, 2020 • 18 tweets • 20 min read
We love getting questions about mining, minerals and geology! We were asked about sinkholes and whether they are a risk when walking in the woods. #nspoli#cbpoli#novascotia#capebreton@oxfordsinkhole
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
Sep 20, 2020 • 18 tweets • 19 min read
We love getting questions about mining, minerals and geology! We were asked about the historic #NewCampbellton coal mine in #VictoriaCounty. #nspoli#cbpoli#novascotia#capebreton#nshistory @JaimeBattiste
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.
Sep 19, 2020 • 10 tweets • 10 min read
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
We love getting questions about mining, minerals and geology! We were asked about Nova Scotia’s version of the San Andreas Fault - the Cobequid-Chedabucto Fault System!
Nova Scotia has two halves geologically... #nspoli#cbpoli#NovaScotia#CapeBreton#NovaScotia has 2 halves geologically: The northern half came from Europe and the southern half from Africa. The Cobequid-Chedabucto Fault System is where they collided 400 million years ago. This caused earthquakes, melted rocks+concentration of minerals like #gold+zinc. #nspoli
Why is amethyst purple?
Most #amethyst forms when lava with gas bubbles in it hardens and creates rock with cavities (i.e. the lave crusts over before gasses in the lava can escape, leaving a hollow area inside the rock). #nspoli#cbpoli#novascotia
The cavities fill with silica-rich liquid that contains trace amounts of iron. Over time, this liquid forms crystals that line the cavity walls. After crystallization, gamma rays, emitted by radioactive materials in the host rock, irradiate the iron to produce the purple color.
Aug 29, 2020 • 10 tweets • 13 min read
The East Gore Slate Quarry in #EastHants likely started operating in the mid-1800s and operated into the early 1900s.
Here's the story of the quarry and how it's connected to Courthouse Hill and the Rawdon #gold mines! #nspoli#novascotia@EastHantsNS#hants
The historical quarry is on turn-of-the-century geological maps but there are no official records of its production, so precise dates aren’t available.
A mill was built nearby to turns its slate into roof shingles. #nspoli#novascotia#easthants#hants
Yesterday was the ancient festival to celebrate Vulcan, the Roman god of fire who was renowned for his metalworking skills. #nspoli#cbpoli#capebreton#novascotia
As a son of Jupiter, Vulcan was the creator of his father's lightning bolts. He also made armor, weapons and jewelry for the gods and heroes of Rome. #nspoli#cbpoli#capebreton#novascotia