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1
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2by Alman, L.Subjects: “...Mining engineers--United States--Portraits...”
Published 1890
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3by Alman, L.Subjects: “...Mining engineers--United States--Portraits...”
Published 1890
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4by Alman & Co.Subjects: “...Mining engineers--United States--Portraits...”
Published 1909
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5by Alman & Co.Subjects: “...Mining engineers--United States--Portraits...”
Published 1909
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6by Alman, L.Subjects: “...Mining engineers--United States--Portraits...”
Published 1889
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7by LafayetteSubjects: “...Mining engineers--United States--Portraits...”
Published 1900
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8by WolfensteinSubjects: “...Mining engineers--United States--Portraits...”
Published 1890
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9Published 1956“...Underground in the mine: engineering students taking part in a surveying course....”
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10
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11
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12
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