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Caption: Book - Mining Engineering Overview (1913) This is a reduced-resolution page image for fast online browsing.
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SAM n I AMI' AND I I d )U51 LABORATORY Th< safety lamp, mine gas and explosibility of dust laboratory ontains an a lortment ot iel ncl electric mine lamps: magnetic-locking and lighting devic sf and the most improved applian< s for t iting lamps. It also contains apparatus for gas analysis and a photometer room for determining the lighting r po of mine hghtim devil I |, r of t|,, r (d du ! ti laborator\ is |uipp< I foi the determination il'ili' < l coal dual and othei line mal rials >
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