Discover and read the best of Twitter Threads about #Quarry

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Travel against time to prevent death of John F kennedy Image
Read 20 tweets
Another #socialdistancing activity: visit #NovaScotia parks that contain former mines/quarries!
The Kempt Quarry Recreation Site is one of many former gypsum quarries in #HantsCounty.
#nspoli #cbpoli #novascotia #COVID19NS
#COVIDCanada @MLAChuckPorter ImageImage
370 million-year-old "Scotia Grey" #granite from the #Shelburne Island Park #Quarry helped build many #NovaScotia buildings including Shelburne Post Office and the old @chronicleherald building.
Today, the quarry is part of the Islands Provincial Park.
#nspoli #cbpoli #novascotia ImageImage
#ShubiePark in #Dartmouth contains a former quarry that is now a baseball field and campground. Former mines and quarries are often hidden in plain sight!
#Halifax #nspoli #Novascotia #NS #cbpoli Image
Read 4 tweets
Re-watching some shows while #socialdistancing for #MarchBreak? We're chatting this week about some of our favourites that have great #geology or interesting stories behind their #filminglocations.
#nspoli #cbpoli #NovaScotia #CapeBreton #COVIDCanada #covid19 #COVID19NS ImageImageImageImage
#GameofThrones used #Iceland's #Thingvellir Park as the #BloodyGate. Its landscape is caused by the Eurasian and #NorthAmerican tectonic plates meeting there and pulling apart at a rate of 2 cms per year. This made a rift valley: low land between 2 separating continents.
#nspoli ImageImageImageImage
#MagheramorneQuarry, #NorthernIreland, is the set for #CastleBlack and #TheWall in #GameofThrones. The quarry wall is used as a backdrop and effects make it look huge.
The site's limestone was used to make cement. #NS has a limestone quarry and cement plant in Brookfield.
#nspoli ImageImage
Read 14 tweets
Former #mines and #quarries often become parks and protected areas. This thread shows some examples in #Halifax, #Dartmouth, #Shelbourne, #Truro, #LunenburgCounty and #KemptShore.

#nspoli #cbpoli #NovaScotia #NS #mining #reclamation ImageImageImageImage
#KiwanisPark in #Truro was developed as a gravel pit in the 1930s to help build Route 2. Like a lot of former pits and #quarries, the site has filled with water and become a natural oasis in the heart of the town.
#nspoli #cbpoli #novascotia #NS #mining #reclamation @TownofTruro Image
Former mines and quarries are often hidden in plain view! #PointPleasantPark contains 50+ former quarries. The stone was used to build walls and forts in the park. For example, slate from the #QuarryPond helped build the #MartelloTower.
#nspoli #cbpoli #novascotia #NS #mining ImageImage
Read 9 tweets
150 victims of the #Titanic are buried in 3 #Halifax cemeteries: Fairview Lawn, Mount Olivet and Baron de Hirsch. 149 have #headstones from the Hanson #Quarry in #NB. A #Dal prof spent 15 years figuring out where the stones are from cuz there are no historical records.
#nspoli Image
The stones and the #quarry were tested for #mineralogy, texture, chemical composition and age to see if they matched. That's harder than it sounds - the original rock is no longer in the quarry (it was extracted) and these features can vary within a deposit.
#nspoli #NovaScotia Image
Still, the analysis suggests the stones, donated by #titanic-owner #WhiteStar in 1912, are almost certainly from there.
The #headstones are 422 million-year-old #gabbro (aka black #granite) and a popular #Halifax tourist attraction.
#nspoli #NovaScotia #NS #cbpoli #NewBrunswick Image
Read 5 tweets
We love getting questions about #mining, #minerals and #geology! We were recently asked about the #ScotchLake #Quarry in #CapeBreton (aka the #GeorgesRiver Quarry). Here’s our answer:

#nspoli #NovaScotia #NS #cb Image
This dolomite #quarry operated from 1899-1951 and was owned by the Dominion Iron and Steel Company (acronym: DISCO!). The #mineral dolomite has many uses, including for acid neutralization in the chemical industry, in stream restoration projects and as a soil conditioner.
#nspoli Image
DISCO made steel with #CapeBreton #coal and #iron from #Newfoundland in #Sydney's #WhitneyPier neighbourhood (named for Henry Melville Whitney, DISCO's president). #Steel is iron and carbon, and the carbon is derived from coal.
#nspoli #NovaScotia #NS #CB #mining #minerals Image
Read 5 tweets
#Mining built #NS!
The #Amherst Red Stone #Quarry was on James Donalds' farm, east of Willow St. (1889-1914). It provided #sandstone for many Amherst heritage buildings including Bank of #NovaScotia (built 1907), Trinity-St. Stephen’s (1906) and 1st Baptist Church (1895).
#nspoli ImageImageImage
"Busy #Amherst" grew rapidly after the #IntercolonialRailway was built through town in 1876 and with the growth of industries like #coal #mining, transforming it from a village to a bustling industrial town. Many of its beautiful buildings date from that era.
#nspoli #NovaScotia ImageImage
Today, the #Amherst Red Stone #Quarry is a lovely pond in a field. Former #mines and #quarries are often hidden in plain sight!

#nspoli #mining #minerals #geology #reclamation ImageImage
Read 3 tweets
#SesameStreet is 50!
Its set is based on a typical #Harlem #brownstone neighborhood. #Brownstones are a type of townhouse that are mainly brick but have #sandstone facades. They became popular in the 1800s and today are an iconic image of #NewYork.
#nspoli #NovaScotia #mining #ns ImageImage
The stone was mainly provided by the #Portland #Brownstone #Quarry which operated for 300 years until it closed in 2012. It was on the #ConnecticutRiver which made shipping easy.
Portland is named for Portland #England, a place famous for its quarries.
#nspoli #mining #NS #mining Image
Steam-powered machines in the 1800s allowed the #sandstone to be cut and shaped faster and more cheaply than ever before, making it affordable - significantly cheaper than stones like #granite or #marble. The stone is pink when cut but turns brown as it weathers.
#nspoli #mining Image
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Historical tailings have nothing to do with modern #gold mining. #Mining today is a science-based industry that takes proper care of the environment.
Standards weren't good enough 100 years ago for mining or anything else. But that's not how we operate now.
#nspoli #NovaScotia ImageImage
Before getting operating permits, #NovaScotia #mining companies must get government approval of #reclamation plans and post-reclamation bonds that ensure funds are available to properly take care of sites.
#nspoli #NS #minerals #geology ImageImage
#NS Mine operators treat, strictly monitor and test water, and report back to @nsgov. Water is recycled on-site to reduce the amount needed. Water released back into a river or lake is usually cleaner after it has been used in a mine or #quarry than it was beforehand.
#nspoli ImageImage
Read 7 tweets
#Mining built #NovaScotia!
The foundation of #NS' democracy (our legislature, at least) is ironstone from the Dalhousie #quarry on the NW Arm. It's 480 million years old and was a common building material in #Halifax in the 1800s. It rusts due to high iron content.
#nspoli @NSLeg ImageImageImage
@NSLeg #Mining built #NovaScotia!
The #legislature's foundation is #ironstone but the rest is mainly tan #sandstone from the Batte #quarry in #Wallace, #NS. The stone is 300 million years old and about 100,000 blocks of it were used. The walls are up to 3 metres thick.
#nspoli @NSLeg ImageImage
@NSLeg In 1985 #NovaScotia's legislature was renovated. The exterior sandstone, from Wallace, was cleaned to its original colour so it could be inspected. 1700 stones were replaced with stones from the same quarry so they would match.
@NSLeg is the oldest legislature in #Canada.
#nspoli Image
Read 3 tweets
#GameofThrones won 12 #Emmys last night. This thread has a couple of our favourite #GoT posts!

#nspoli #NovaScotia #NS #geology #minerals #mining #Emmys2019 #EmmyAwards #EmmyAwards2019 Image
#MagheramorneQuarry, #NorthernIreland, is the set for #CastleBlack and #TheWall in #GameofThrones The #quarry wall is used as a backdrop and effects make it look huge.
The site's limestone was used to make cement. #NS has a limestone quarry and cement plant in Brookfield.
#nspoli ImageImage
#GameofThrones calls it dragonglass but it's really obsidian. It often forms when lava instantly cools from coming into contact with water. It's been used for thousands of years in jewelry, weapons and tools. It's still used in knives because it's much sharper than steel.
#nspoli ImageImage
Read 5 tweets
#Mining built #NovaScotia!
Construction on St. Bernard Church in #Digby County began in 1910 and took 32 years to complete because the parish was determined not to go into debt. It's made of #granite from the #Shelburne Island Park #Quarry which operated from 1890-1960s.
#nspoli Image
#Mining built #NovaScotia!
The Saint-Bernard church was built with over 8000 blocks of granite shipped by rail from #Shelburne to Little Brook Station, and then taken by ox cart over a gravel road to the construction site. Due to weather, this was only done 7 months/year.
#nspoli Image
The 370 million-year-old "Scotia Grey" #granite at the #Shelburne Island Park #Quarry helped build many other #NovaScotia buildings including Shelburne Post Office and the old @chronicleherald building.
Today, the quarry is part of the Islands Provincial Park.
#nspoli #Halifax ImageImage
Read 3 tweets

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