To go with this remarkable thread by Erik Loomis on labour protest and massacre in Chile's nitrate mines in the

To go with this remarkable thread by Erik Loomis on labour protest and massacre in Chile's nitrate mines in the early 20th century, I cannot recommend highly enough this epic piece on nitrogen and it history by @Eaterofsun in @TheEconomist
economist.com/christmas-spec… twitter.com/ErikLoomis/sta…

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