Transactions . 50. Struts of white pine, secured by 2-inchnails. Broke at 8140 pounds. wire Fig. ?r::^c>-L-r:;^-r;;]-4-^^l^^ Clarks Beam. Sides of this B -Clear-span=72^—. EAM WERE NAILED EXACTLY LIKE FlG. 48. -s-r-rt No. 62. Four pieces deep, superimposed like-big. 50, forming a beam inches deep. Struts of Fig. 5o

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries