how the u.s. navy might have built a secret submarine baseaug 09, · how the u.s. navy might have built a secret submarine base . the bulk of it is taken up with documentation of tunneling methods and miningtailings overviewstorage methodsterminologyexampleseconomicsenvironmental concernshuman rightsinternational policy
historically, tailings were disposed of in the most convenient manner, such as in downstream running water or down drains. because of concerns about these sediments in the water and other issues, tailings ponds came into use. the sustainability challenge in the management of tailings and waste rock is to dispose of material, such that it is inert or, if not, stable and contained, to minimise water and energy inputs and the surface footprint of wastes and to move toward finding alternate uses. · text under ccbysa licenseapplying data mining and machine learning techniques tosubmarines, etc. we use the minimizing of a criterion function of overall conflict (themetaconflict function) as the method of partitioning the evidence into subsets representing the events. the method of finding the best partitioning is based on an iterative minimization of the metaconflict function. inoptimal path planning based on a* algorithm forsubmarine mining vehicle which complete the mining work in a certain mining area need to enter the next mining area quickly and economica lly. as a classical algorithm, the majority of scholars...estimated reading time 6 minsvolcanogenic massive sulphide (vms) base metal depositsaug , · this is a much cheaper mining method than when ore is hosted in narrow veins, which results in a much higher ratio of waste to ore removal. vms deposits often occur in clusters within a particularly small area (~10 km 2 ) all related to the same event, since the metalrich fluids may escape to the surface through many vents.deep sea mining apr 03, 07· deep sea mining is a growing subfield of experimental seabed mining that involves the retrieval of minerals and deposits from the ocean floor found at depths of 0 meters or greater. as of , the majority of marine mining efforts are to shallow coastal waters, where sand, tin and diamonds are more readily accessible. there are three types of deep sea miningestimated reading time minsminesmethod of delivery mines can be deployed by aircraft, submarine, or surface ship. airlaid mines are dropped over an area, similar to a bomb. submarinelaid mines can be secretly planted and are usually launched from a sub's yorpedo tubes. any mine type can be deployed by a surface ship.port laing submarine mining station nqhtthe submarine mining service of the british army operated from 63 to 06, as a lowcost and efficient part of the defence of our naval and commercial ports. the idea of destroying ships by means of seaborne devices (torpedoes and mines) as opposed to gunfire dates back to the th century.
optimal path planning based on a* algorithm for submarinesubmarine mining vehicle which complete the mining work in a certain mining area need to enter the next mining area quickly and economically. as a classical algorithm, the majority of scholarsmine tailings disposal methodsjun , · historically, the underground mining method most often used has been some form of open stone. generally, to reach the ore or mineral, a shaft is sunk near the ore body. horizontal passages are cut from the shaft to the various depths necessary to reach the ore. the ore is then removed, hoisted to the surface, crushed, and concentrated.mines of the united states of america navweapsus submarines planted a total of 576 mark mines and 82 mark 10 mines in 36 fields. of these, 4 mines planted in of the fields sank 27 ships of about 63, tons and damaged 27 more of approximately 1, tons. see us submarine mining success for other information.research on mining method of submarine natural gasbased on the geological characteristics of the submarine natural gas hydrates storage and the requirement of the mining environment, combined with the deep sea mining technology and the main characteristics of the doublechannel lift pump, a new mining method called the mining method of submarineauthor yi cong zeng, hai liang xu, wan rong wu, bo wumineshistorypositionmethod of deliverymethod of actuation aircraftlaid mines are normally employed in offensive operations and are dropped from aircraft in the manner of a bomb. these mines must be specially configured for air delivery. aircraft provide...submarinelaid mines, normally used in offensive operations, are specially configured mines that are launched from the torpedo tubes of submarines. when secrecy is paramount, the submarine is the p...surfacelaid mines are no longer in the us stockpile of active weapons. however, almost all air and sub aircraftlaid mines are normally employed in offensive operations and are dropped from aircraft in the manner of a bomb. these mines must be specially configured for air delivery. aircraft provide...submarinelaid mines, normally used in offensive operations, are specially configured mines that are launched from the torpedo tubes of submarines. when secrecy is paramount, the submarine is the p...surfacelaid mines are no longer in the us stockpile of active weapons. however, almost all air and submarinelaid mines can be adapted for surface laying if the need arises. surface laying is the...see morenew content will be added above the current area of focus upon selectionsee more on fas fort gilkicker stokes bay fort monckton and thea submarine mining establishment for the defence mines was built at blockhouse and this became the centre of the r.e. work. the submarine mining militia was formed in 78 with the purpose of operating the mineatolia california western mining history"the submarine shipment, as t to the writer by atolia's codiscoverer, pete osdick, caused much excitement in the little desert mining town. several hundred sacks of concentrate were placed on the town's depot platform under guard. the johannesburg local setwhat is mining? youtubea short film describing the mining process for people in the solomon islandsfrontiers an overview of seabed mining including thethe german submarine gas hydrate reservoirs (sugar) consumer access to recycling and streamlining manufacturing processes can be a more efficient and economically viable method of sourcing metals than mining ore and could greatly reduce or even negate the need for exploitation of seabed mineral resources.
naval mine overviewtypesdescriptionhistorymine layingdamagecountermeasuresnational arsenals
naval mines may be classified into three major groups; contact, remote and influence mines.
the earliest mines were usually of this type. they are still used today, as they are extremely low cost compared to any other antiship weapon and are effective, both as a psychological weapon and as a method to sink enemy ships. contact mines need to be touched by the target before they detonate, limiting the damage to the direct effects of the explosion and usually affecting only the vessel that triggers them. · text under ccbysa licenseexperimental research on data synchronous acquisitionoct 06, · experimental research on data synchronous acquisition method of subsidence monitoring in submarine gas hydrate mining area jiawang chen , 1 chen cao , 1 yongqiang ge , 1 huangchao zhu , 1 chunying xu , 1, * yan sheng , 2 lieyu tian , 2 and hanquan zhang 2submarine cables and deep seabed miningsubmarine cables and deep seabed mining 5 i. executive summary 1. on 10 march , the international cable protection committee (icpc)1 and the international seabed authority (isa)2 held a firstofitskind workshop on submarine cables and deep seabed miningtechnology of safe and efficient submarine deposit miningtwo representative test stopes of 63 and 71 are chosen. after the comprehensive comparison and analysis, highdrift backfilling method is adopted to research the safety of submarine mining. industrial test results show that the highdrift backfilling method has the significant advantages of safety mining, low ore dilution and so on.magnetic and gravity methods in mineral exploration themagnetic methods are more popular in mineral exploration than gravity, not least because magnetic data can be quickly recorded from the air and in conjunction with other geophysical surveys. land gravity surveys, by contrast, may require greater field efforts (figs. 1, 5 and 6), more time, and more commitment of scarce capital.submarine mines in united states harbor defense there is a report that a submarine attempted to penetrate the mine fields of boston harbor in june 42, but reportedly withdrew before the mines could be fired or reset to detonate on contact. submarine oil and gas pipeline technologydesign technology for submarine pipelines in sand mining areas nonuniform consolidation settlement of the seabed in a sand mining area will result in overlarge local bending stress on a submarine pipeline, thus damaging it. when the route of the submarine pipeline inevitably crosses a sand mining