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Private construction companies built roads starting in 1844 to fill the void in long-distance road construction left by the departure of the federal government. [40] The first roads were corduroy roads; to build these, logs of all sizes were placed across the road. The gaps between the logs were filled in with smaller logs or earth.
Michigan's numbering plan expanded from three area codes in 1947 to twelve: 1947: Area codes 313, 517 and 616 are three of the original 86 area codes in the North American Numbering Plan. 1961: Area code 906 was created in the first split of 616. 1993: Area code 810 was created in the first split of 313. 1997: Area code 734 was created in the ...
The Interstates in Michigan have their origins in World War II-era expressways built in the Detroit area. After the system was created in 1956, the state highway department completed its first border-to-border Interstate in 1960. The last highway was completed in 1992, giving Michigan a total of 13 Interstate freeways.
537 reserved as a fifth area code for the region. 906: Michigan (Upper Peninsula: Sault Ste. Marie, Escanaba, Houghton, Iron Mountain, Marquette, Menominee, etc.) March 19, 1961: split of 616; 907: Alaska (all, except the lone border town of Hyder which uses the BC, Canada area codes of 236, 250, 672, or 778 depending on its assigned number ...
Top publicly traded companies in Michigan according to revenues with state and U.S. rankings: State: Corporation: US: 1: Ford: 19 2: General Motors: 21 3: Dow: 75 4
Any organization with 50 or more employees was eligible to participate in the program that identifies top employers using a workplace culture survey.
Top publicly traded companies in Michigan according to revenues with state and U.S. rankings: State: Corporation: US: 1: Ford: 19 2: General Motors: 21 3: Dow: 75 4
Healthcare is the dominant sector among the largest companies in the US, including health insurance giants Humana in Kentucky at $56.1 billion and UnitedHealth out of Minnesota at $485.49 billion.