Visualizing Historical Water Use at Ghost Plants

Here's a first draft of a time series map we've created exploring natural resource use within iron ore processing plants in the Lake Superior District. This video is showing the amount of water used in these plants to process low-grade ores. Taconite, which required additional water for the pelletizing process, comes into play around 1960, resulting in dramatic increases in the scale of water use.  Calculating the amount of water required was factored by averaging reported water use at these plants over time, with the more recent plants, such as the taconite ones, providing more concrete data.  

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