Found inside – Page 171Tetrahedrite was not recognized in the ore , but is probably not entirely ... by three tunnels , the lowest being at an elevation of nearly 5,500 feet . No. Found inside – Page E-2Much of this work was in the Triumph mine area . ... In 1943 , a 6,500 - foot - long haulage tunnel ( Plummer tunnel ) was completed connecting the 700 ... Found inside – Page 355Three distinct classes of gravel may be recognized at this point , the extensive ... It has been opened in its basal portions by short tunnels on bed rock ... Found inside – Page 117Two stages of mineralization can be recognized : the first is represented ... This vein has been stoped along most of the tunnel level workings in the south ... Found inside – Page 18Much prospecting of carbonate rocks in the general vicinity of tiny ... Bedded Replacement Deposits The thrust deposits are a special class of bedded ... Found insideThey seem to be due to very small rockmovements , resulting either from the forces of the many intrusions , or from the readjustments attendant upon frequent heating and cooling . ... The faults that have been recognized fall into two classes , of different strike and age . ... Slickensides also appear on the wall of an andesite dike in a tunnel running from the Southern Beauty ( 24 ) to the Union ( 29 ) claim ... Found inside – Page 24(2012) identified seven classes of subsurface function that can be considered in ... but more readily recognized in relation to underground transportation, ... Found inside – Page 44Environmental Geology Notes, Volume 52 E. Joyce Kennedy, George Muggah Hughes, Hubert E. Risser, Jerry Alvin Lineback, ... This is not a notable rate of use for it is admittedly below potential , but it is worthy of mention and may be surprising to ... of various kinds involving as many as 30,000 people using approximately 16,000 acres of Illinois coal strip mine areas . ... The potential of these areas has not yet been fully recognized , and each year several hundred additional acres of ... Found inside – Page 844Geological Survey (U.S.) ... This is actually the case , the water found in the Foggy tunnel being many times more abundant than that in the Mystery and ... Found inside – Page 249However , it must be recognized that such comparisons are more difficult for the French tunnels because of the use of EPB closed face machines ... Found inside – Page 358When dry , as it is during the summer season , the stream bed may be recognized where it leaves the wood and enters the flats , by the presence of much calcareous tufa . The mine may ... 24 ] and the mineral may be seen in the beds on both sides of the tunnel in large geodic masses of a milk white color . Some of these ... level ) cystoid - a class of organisms related to 358 NEW YORK STATE MUSEUM. This manual focuses primarily on the civil elements of design and construction of road tunnels. Found inside – Page 171Tetrahedrite was not recognized in the ore , but is probably not entirely ... by three tunnels , the lowest being at an elevation of nearly 5,500 feet . No. Found inside – Page 105The moderate - temperature class evidently fels ; but these altered rocks ... been rock alteration and origin of ores is considered on recognized by ... Found inside – Page 76Washington Geological Survey. kameen river . Quartz lodes were recognized at that time but no known locations were made . ... Again , in many instances , the veins did not extend to the lower levels reached by long and expensive tunnels . ... The ore deposits fall into two general classes : ( 1 ) those in which the metallic mineral or minerals are rather evenly distributed through the rock formations , or ... Found inside – Page 349While aporhyolites have only recently been recognized in America ... 4 For a list of English , French , and German papers on this class of rocks see ... Found inside – Page 321Headrace tunnels are famous for their scales and technological difficulties, and are world-class works recognized at home and abroad. Found inside – Page 214It is not improbable that these ores belong in the contact - metamorphic class , but thus far they have furnished no characteristic contactmetamorphic minerals . ... About 130 feet east of the New York ore that is now being mined the mine tunnel crossed a small body of zinc ore . ... The oxidized ore toward the west does not carry any recognized characteristic contact - metamorphic mineral , but the rock ... Found inside – Page 24in parts , which is readily recognized by the practised eyes of the managers . In the All Nations No. 3 reef , in the same mine , but on the north - west side of the tunnel , the gold occurs under different circumstances . ... The patches have no great extension any way in themselves , but they follow a more or less horizontal line , and as far as proved have not ... I am bound to say that at this point I was unable to distinguish between the good and bad classes of country , unless it be by the ... Found inside – Page 349While aporhyolites have only recently been recognized in America ... 4 For a list of English , French , and German papers on this class of rocks see ... Found inside – Page 349While aporhyolites have only recently been recognized in America ... 4 For a list of English , French , and German papers on this class of rocks see ... Found inside – Page 238... veh/sec Geologically, how many classes of tunnels are recognized? (a) 2 (b) 3 (c) 5 (d) 4 40. Traffic conflicts that may occur in a rotary inter-section ... Found inside – Page 2102On the north dip in the Sharp mountain this coal is not worked ; where cut at Reevesdale tunnel the bed is a confused mass 18 ' thick . At Rocktown ... A bed about 3 ' thick at 60 ' above the Orchard is tunnelled to at Newkirk ; apparently the coal is not first class as only a few hundred feet of gangway was driven . The Little Orchard elsewhere in this division is not recognized as a workable bed . Diamond ... Found insideNOTE: NO FURTHER DISCOUNT FOR THIS PRINT PRODUCT-- OVERSTOCK SALE -- Significantly reduced list price USDA-NRCS. Issued in spiral ringboundbinder. By Philip J. Schoeneberger, et al. Found inside – Page 88This leads to manifestation of complex hydro-geotechnical geological processes in ... it is necessary to recognize almost complete absence of regulatory ... Found inside – Page 159Markovian properties have been recognized in many geological phenomena , and Markov processes have been used ... geologic prediction models is to determine ground class state probabilities at any locations along the tunnel alignment . Found inside – Page 462This section refers to faults that can be recognized by fracture zones and are included on geological maps as 'geological faults', as well as those ... Found inside – Page 77The other two in this class , the Weston he calls the West London fault ... NE . on the Blanchard tunnel described in part with the early reverse faults and ... Found inside – Page 4Furthermore , Plains , ” by Melton ( 1940 ) , distinguished into some surface features , such as frosting , may not be classes those dunes on bare surfaces ... Found inside – Page 65Also, the geological structures there are the most complex, ... For both analysis and design, proper recognition of the mechanical parameters of the rock ... Found inside – Page 354Epidemiologic (CH2O) gas is studies a recognized human have included chemical ... and genotoxicity. of the radiation exposure from radon in the air may be ... Found inside – Page 275From these studies, we found that the distribution of rock classes and the mechanical ... expect Weathering rate of mudstone and tuff on old unlined tunnel. Found inside – Page 274Established tunnel geology longitudinal section . ... Figure 2 shows the relationship for three kinds of hard rock specimens between effective porosity and ... Found inside – Page 272On the 300 - ft . level rights may be separated from the right Geological Survey have already resulted a drift has been run ... of An adequate classification of the pub greatest beneficial use for the states as this tunnel . lic lands is furthermore essential ... The principle of consist of two claims and 19 unpatented “ To complete this tunnel and build a relative worth is recognized by the claims ; is equipped with ... Found inside – Page 27Essential to the approach is the recognized need, wherever possible, to quantify classes to which descriptive terms are applied. Found inside – Page 124Furthermore, in many instances, the rate of growth in the use of land for ... Henry Darcy wrote “a city that cares for the interest of the poor class should ... Found inside – Page 349In Sweden and Belgium they bave been recognized and described by ... 4 For a list of English , French , and German papers on this class of rocks see ... Found inside – Page 214It is not improbable that these ores belong in the contact - metamorphic class , but thus far they have furnished no characteristic contactmetamorphic minerals . ... About 130 feet east of the New York ore that is now being mined the mine tunnel crossed a small body of zinc ore . ... The oxidized ore toward the west does not carry any recognized characteristic contact - metamorphic mineral , but the rock ... Found inside – Page 85It is now generally recognized that future additions to our mineral resources must depend in large part upon more careful ... The drawback of ' rugged topography might be overcome by using it in underground workings such as tunnels , drifts , or ... But it can not be used indiscriminately for outlining any class of ore deposit . Found inside – Page 20Table 3.3 Change of supporting gradea a From China Railway First Survey and Design Inst tunnel in the IV and V class rock with high geo-stress condition. Found inside – Page 95It should be recognized, however, that the precision of evaluation of the controlling properties of the ground is much less than the precision of the ... Found insideThe geological parameters which the engineer needs for his design are specified and the reasons therefor are explained . ... feature of the Geomechanics Classification is demonstrated by applying it to the selection of primary support in tunnel design . ... of things in classes ccording to the characteristics they have in common ' —» many a dictionary defines classification . The need for a suitable classification in the field of ock mechanics has long been recognized and , in fact , umerous ... Found inside – Page 3952Rock Class (Q-System) Rock Bolt (Qty/m) Mesh (m2/ meter) Shotcrete thickness ... to increase safety in the Tunnel 5 GEOLOGY AND ROCK SUPPORT The geological ... Found insideUnderground Engineering for Sustainable Urban Development explains the findings of researchers and practitioners with expertise in geotechnical engineering, underground design and construction, trenchless technologies, risk assessment, ... Found inside – Page 64These are distinct species , alTriticites creekensis Thompson in many respects ... meeki ( Meek and Pseudofusulina delicata has beeen recognized only Hayden ) ... Found inside – Page 326Geologically, how many classes of tunnels are recognized? 27. For a bolt of 36 mm diameter, the diameter of hole shall be taken as : A. 2 B. 3 C. 5 D.4 A. Found inside – Page 577Public Outreach WSSC recognized the need for extensive community outreach and ... Geologically, the project site lies within the Maryland Piedmont ... Found inside – Page 57... Tunnel Works at Calais , and through the kindness of Mr. Brady — I have been able , in fact , to recognize among them some Ferns ... EURY , but with striated surface ; I should be disposed to class them with Carpolithes corculum STERNB . Found inside – Page 64These are distinct species , alTriticites creekensis Thompson in many respects ... meeki ( Meek and Pseudofusulina delicata has beeen recognized only Hayden ) ... 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