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  2. Tala tank - Wikipedia

    en.wikipedia.org/wiki/Tala_tank

    To ensure uninterrupted water supply to the city, the Assistant Engineer of Calcutta Corporation (now Kolkata Municipal Corporation or KMC), Arthur Peirce, conceived what became Tala tank in 1901. [7] The Chief Engineer of KMC, W. B. MacCabe, designed the tank in 1902. Having a nine-million-gallon water reservoir overhead was a daring ...

  3. Corrosion inhibitor - Wikipedia

    en.wikipedia.org/wiki/Corrosion_inhibitor

    Figures such as the chloride-to-sulfate mass ratio (CSMR) can be used to estimate the risk of corrosion at galvanic connections (i.e. desimilar pipe/solder connections, such as a lead-to-iron transition). The 2014 Flint water crisis was caused by a combination of source water change and a lack of corrosion control. The new, higher-CSMR water ...

  4. Rust - Wikipedia

    en.wikipedia.org/wiki/Rust_Removal

    Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe 2 O 3 ·nH 2 O) and iron(III) oxide-hydroxide (FeO(OH), Fe(OH) 3 ), and is typically associated with the corrosion of refined iron .

  5. East Calcutta Wetlands - Wikipedia

    en.wikipedia.org/wiki/East_Calcutta_Wetlands

    The East Kolkata Wetlands (officially known as East Calcutta Wetlands) (22 0 27’ N 88 0 27’ E), are a complex of natural and human-made wetlands lying east of the city of Calcutta (Kolkata), of West Bengal in India. The wetlands cover 125 square kilometres and include salt marshes, and agricultural fields, sewage farms and settling ponds.

  6. What is the ‘Rust Belt’ and which states are ... - AOL

    www.aol.com/rust-belt-states-included-region...

    Donald Trump took three 'rust belt' states that are part of the 'blue wall' in 2016. What states are they?

  7. Kolkata - Wikipedia

    en.wikipedia.org/wiki/Kolkata

    Kolkata, [a] also known as Calcutta [b] (its official name until 2001), is the capital and largest city of the Indian state of West Bengal. It lies on the eastern bank of the Hooghly River, 80 km (50 mi) west of the border with Bangladesh. It is the primary financial and commercial centre of eastern and northeastern India. [16]