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Mile a day paving: In 1959 Northern Improvement became one of the first contractors in the nation to complete one mile of concrete paving in one day, the job was on I-94 near Tappen, ND.
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Mile a day paving: In 1959 Northern Improvement became one of the first contractors in the nation to complete one mile of concrete paving in one day, the job was on I-94 near Tappen, ND.