This historic diagram, which had been digitally enhanced and colorized, depicted the surface construction of a 'dug'-, 'drilled'-, and 'driven'-type wells that were equipped with suction pumps. The cross-sectional renderings identified the components, placing them into the approximate relationship to one another, in their optimal positions, in order to achieve maximum performance efficiency.
CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
December 4, 2012
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