 A plant of 500 tons daily capacity is as small as can be operated permanently and successfully, as the profits will depend chiefly on the large tonnage handled. In this respect the oil shale industry bears the same relation to oil that Utah Copper and...  Minerals and Mining Nova Scotia - Page 148by R. Drummond - 1918 - 368 lehteFull view - About this book
 | 1918 - 572 lehte
...chemical problems are numerous and require a high grade of scientific ability for their solution. 7. A plant of 500 tons daily capacity is as small as...Copper and the other copper porphyries bear to copper. 8. An investment of J150.000.00 is as small as can be safely counted upon to make a single project... | |
 | Victor Clifton Alderson - 1920 - 218 lehte
...problems are numerous and require a high grade of scientific ability for their solution. A plant of 1,000 tons daily capacity is as small as can be operated...the oil shale industry bears the same relation to the oil that Utah Copper and the other copper porphyries bear to copper. An investment of $500,000... | |
 | Victor Clifton Alderson - 1920 - 220 lehte
...problems are numerous and require a high grade of scientific ability for their solution. A plant of 1,000 tons daily capacity is as small as can be operated...the oil shale industry bears the same relation to the oil that Utah Copper and the other copper porphyries bear to copper. An investment of $500,000... | |
 | Victor Clifton Alderson - 1920 - 224 lehte
...problems are numerous and require a high grade of scientific ability for their solution. A plant of 1,000 tons daily capacity is as small as can be operated...the oil shale industry bears the same relation to the oil that Utah Copper and the other copper porphyries bear to copper. An investment of $500,000... | |
 | 1918 - 742 lehte
...chemical problems are numerous and require a high grade of scientific ability for their solution. 7. A plant of 500 tons daily capacity is as small as...bears the same relation to oil that Utah Copper and other copper porphyries bear to copper. 8. An investment of $150,000.00 is as small as can be safely... | |
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