Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3749Chemical news office., 1932 |
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Strona 114
... operation early in the year its mine near Carlsbad , New Mexico . This mine , the only shaft mine operated for potash in America yields sylvite ( potassium chloride ) from a depth of 1,200 to 1,400 feet of sufficient purity for sale as ...
... operation early in the year its mine near Carlsbad , New Mexico . This mine , the only shaft mine operated for potash in America yields sylvite ( potassium chloride ) from a depth of 1,200 to 1,400 feet of sufficient purity for sale as ...
Strona 115
... operation at Birmingham and visitors to the Fair may also bring their own small metal parts , such as pins , bolts , cups or washers , to be case - hardened while they wait . They will be surprised to find that soft objects are ...
... operation at Birmingham and visitors to the Fair may also bring their own small metal parts , such as pins , bolts , cups or washers , to be case - hardened while they wait . They will be surprised to find that soft objects are ...
Strona 116
... operations in properly - conducted orchard , little work has been done on the actual expense involved ; the most searching and ambitious investiga- tion of this difficult problem made in England up to the present time is probably that ...
... operations in properly - conducted orchard , little work has been done on the actual expense involved ; the most searching and ambitious investiga- tion of this difficult problem made in England up to the present time is probably that ...
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