Ecolab, Inc.

Ecolab, Inc., is a public company that provides hygiene, water, and energy products and services. It was founded in 1923 as Economics Laboratory in St. Paul. By 2017, it employed 38,000 workers in over 170 countries, served customers in more than 1.3 million locations, and reported annual sales of $13 billion. It counted among its employees 1,600 scientists and held 6,300 patents.

Color image of four small beads from 2009 excavation and one larger bead from 2010.

Glass beads from 2009–2010 excavations

Four small beads from 2009 excavation and one larger bead from 2010 excavations by Dr. Katherine Hayes. Photograph by Don Hoffman.

Color image of artifacts metal detected by a relic collector prior to 1972 and identified as an iron ferule, a piece of fire steel, a rosehead nail, a fragment from the bottom of a kettle, and an axe head.

Artifacts metal detected at Little Round Hill

Photograph of artifacts metal detected by a relic collector prior to 1972 and identified as an iron ferule, a piece of fire steel, a rosehead nail, a fragment from the bottom of a kettle, and an axe head. Printed in Birk, Douglas A., "A Preliminary Study of the Little Round Hill Site, Old Wadena Park, Wadena County, Minnesota." Institute for Minnesota Archaeology, Reports of Investigation, no. 214, 1992, fig. 3.

Site map of Little Round Hill, 2104.

Site map of Little Round Hill

Sketch of Little Round Hill site with excavation units and shovel test plots indicated. Printed in Katherine Hayes’ “Results of Survey and Excavation of the Little Round Hill (2WD16) and Cadotte Post (21WD17) Sites in Wadena County, Minnesota: A View of the Fur Trade in the Late Eighteenth Century,” a report prepared for the Wadena County Historical Society, 2014.

Site map of Little Round Hill, 1992.

Map of Little Round Hill site

The Little Round Hill site, surface features, and IMA 1992 excavations. Printed in Douglas A. Birk’s “A Preliminary Study of the Little Round Hill Site, Old Wadena Park, Wadena County, Minnesota. Institute for Minnesota Archaeology.”

Color image of a decorated Belgian Relief Flour sack, ca. 1914–1918.

Decorated Belgian Relief Flour sack

Decorated Belgian Relief Flour sack, ca. 1914–1918.

Black and white photograph of workers posed by Pillsbury “A” Mill in Minneapolis, ca. 1918.

Workers posed by Pillsbury “A” Mill

Workers posed by Pillsbury “A” Mill in Minneapolis, ca. 1918.

Black and white photograph showing the tents of D Company, First Minnesota Infantry, on guard duty at the Pillsbury mills, 1917.

Tents of D Company, First Minnesota Infantry, Pillsbury Mills

Tents of D Company, First Minnesota Infantry, on guard duty at the Pillsbury mills, 1917.

Colorized postcard depicting the Pillsbury milling complex, including the Pillsbury "A" Mill, ca. 1920.

Pillsbury milling complex

Postcard depicting the Pillsbury milling complex, including the Pillsbury "A" Mill, ca. 1920.

Black and white photograph of the the West Side Milling District of Minneapolis from the courthouse showing the extensive rail yards required for the shipping of grain and flour, ca. 1912. Photograph by Sweet.

View of the West Side Milling District

View of the West Side Milling District of Minneapolis from the courthouse showing the extensive rail yards required for the shipping of grain and flour, ca. 1912. Photograph by Sweet.

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