Transactions of the American Institute of Mining Engineers, Τόμος 1The Institute, 1873 |
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
advantage American amount appear associated average base beds bismuth blast bottom bushels carbon carbonic acid carried cause cent charcoal charge clay coal coke Company considerable containing copper cost course deposits depth effect ENGINEERS experiments fact feet fire four fuel furnace gases give given gold greater ground heat holes important inches increased Institute iron labor latter lead less lignites limestone lines loss lower material matte means meeting metal method mill mineral mining Mountain necessary obtained operation oxide pass pillars portion possible pounds practical present pressure produced proportion quantity question rails reason reduced region rocks roll roof seam shaft side silica silver slag smelting steel surface temperature thickness tion tons tuyeres veins weight West whole
Δημοφιλή αποσπάσματα
Σελίδα 33 - Idaho is another lino of silver mines, mineralized with complicated association of the base metals, and more often occurring in older rocks. Through New Mexico, Utah, and Western Montana lies another zone of argentiferous galena lodes. To the east, again, the New Mexico, Colorado, Wyoming, and Montana gold belt is an extremely well-defined and continuous chain of deposits.
Σελίδα xx - Rules may be amended at any annual meeting by a two-thirds vote of the members present ; Provided, that written notice of the proposed amendment shall have been given at a previous meeting ; am!
Σελίδα xviii - Vice-Presidents for two years, and the Managers for three years ; and no VicePresident or Manager shall be eligible for immediate re-election to the same office at the expiration of the term for which he was elected. At each annual meeting a President, three Vice-Presidents, three Managers, a Secretary, and a Treasurer shall be elected, and the term of office shall continue until the adjournment of the meeting at which their successors are elected.
Σελίδα xviii - The duties of the president, vicepresidents, treasurer and secretary, shall be such as usually pertain to their offices, or ma'y be delegated to them by the unanimous vote of the executive committee.
Σελίδα 419 - ... power which this peroxide has of oxidizing and consuming these same organic matters, which are thereby finally converted into carbonic acid and water. This last action, let me say in passing, is illustrated by the destructive action of rusting iron bolts on moist wood, and the effect of iron stains in impairing the strength of linen fibre. We see in the coal formation that the vegetable matter necessary for the production of the iron-ore beds was not wanting ; but the question has been asked...
Σελίδα xix - All vacancies shall be filled by the appointment of the Council, and any person so appointed shall hold office for the remainder of the term for which his predecessor was elected...
Σελίδα xvii - To promote the arts and sciences connected with the economic production of the useful minerals and metals, and the welfare of those employed in these industries...
Σελίδα xix - Scrutineers, appointed at the annual meeting by the presiding officer ; and the persons who shall have received the greatest number of votes for the several offices, shall be declared elected, and the Scrutineers shall so report to the presiding officer.
Σελίδα 109 - It is well known to every metallurgist that whenever the foundation is laid for a " sow " it is extremely difficult to prevent its rapid growth ; and even if the larger parts are broken or chiseled out at every tapping the iron will continually gain on the smelter. By the employment of the automatic tap the first formation of "sows
Σελίδα xviii - III. DUES. The dues of members and associates shall be ten' dollars, payable upon election, and ten dollars per annum, payable in advance at the annual meeting ; Provided, that persons elected at the February meeting shall not be liable to dues at the first annual meeting following ; and members and associates permanently residing in foreign countries shall...