Bit mining ltd 1973
City jaipur mumbai delhi bengaluru Hyderabad kolkata chennai agra agartala ahmedabad ajmer allahabad amaravati amritsar aurangabad bareilly bhubaneswar bhopal chandigarh coimbatore cuttack dehradun erode faridabad ghaziabad goa gurgaon guwahati hubballi imphal indore itanagar jammu jamshedpur jodhpur kanpur kochi kohima kolhapur kozhikode ludhiana lucknow madurai mangaluru meerut mumbai region mysuru nagpur nashik navi mumbai noida patna puducherry pune raipur rajkot ranchi thane salem shillong shimla srinagar surat trichy thiruvananthapuram udaipur vadodara varanasi vijayawada visakhapatnam. Rajasthan high court issues notice to Centre, state over lignite mining. JAIPUR: Rajasthan High Court has issued notice to the Centre and the state over revenue losses to the state exchequer due to leasing out of lignite mines to private players in violation of rules. In the PIL, it has been alleged that while the loss of revenue to the government due to this illegal mining is to the tune of Rs 28, crore, the CAG audit estimated a loss of Rs 2, crore as the government failed to collect penalty from the private company.
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- Buy Coal India, target price Rs 234: ICICI Securities
- Hold Coal India, target price Rs 150: ICICI Direct
- Blockchain’s Energy Crisis
- Alaska-Pacific Consolidated Mining Company records
- CA2757795A1 - Polygon-shaped carbide tool pick - Google Patents
- Hedging renewable energy investments with Bitcoin mining
- Melbourne Journal of International Law
- US8342611B2 - Spring loaded pick - Google Patents
- PAYMENT OF BONUS ACT
- Midwest plan hangs on 1973 agreement
Buy Coal India, target price Rs 234: ICICI Securities
Effective date : Year of fee payment : 4. In one aspect of the invention, an apparatus for degrading natural and man-made formations includes a pick with an axially spring loaded pick comprising a central axis and being attached to a holder secured to a driving mechanism. The pick comprising a steel body with an axial shank disposed within a bore of the holder. Efficient degradation of materials is important to a variety of industries including the asphalt, mining, construction, drilling, and excavation industries.
In the asphalt industry, pavement may be degraded using picks, and in the mining industry, picks may be used to break minerals and rocks. Picks may also be used when excavating large amounts of hard materials. In asphalt recycling and trenching, a drum or chain supporting an array of picks may rotate such that the picks engage a paved surface causing it to break up.
Examples of degradation assemblies from the prior art are disclosed in U. Patent Publication No. The picks typically have a tungsten carbide tip. Many efforts have been made to extend the life of these picks. Examples of such efforts are disclosed in U. In one aspect of the invention, an apparatus for degrading natural and man-made formations includes an axially spring loaded pick comprising a central axis and being attached to a holder secured to a driving mechanism.
The tip of the pick comprises a material selected from the group consisting of cubic boron nitride, diamond, diamond like material, carbide, a cemented metal carbide, or combinations thereof. The material may be at least 0.
The tip may also have a 0. The steel body of the tip may have a carbide core and the tip may be brazed to the carbide core. A spring mechanism may be built into the holder which allows the tip to engage the formation and then recoil away from the formation lessening drag that would otherwise occur on the tip. The recoiling effect is believed to reduce wear caused from the drag. The recoiling effect is also believed to degrade the formation in larger chucks than dragging the tip against the formation surface.
The spring mechanism may comprise a coil spring, a compression spring, a tension spring, Belleville spring, wave spring, elastomeric material, gas spring, or combinations thereof. The pick may also comprise an axial shank which is press fit into the holder. The shank is secured within a holder which is secured to the driving mechanism. The driving mechanism is a drum, chain, wheel, or combinations thereof. The driving mechanism may be attached to a trenching machine, excavator machine, pavement milling machine, a coal mining machine, or combinations thereof.
The driving mechanism may be attached to a motorized vehicle with a dampening element adapted to insulate the vehicle from the vibrations of the driving mechanism. The dampening element may comprise a shock, an elastic material, or a combination thereof. In another aspect of the invention, a method comprising the steps of providing an axially spring loaded pick comprising a central axis and being attached to a holder secured to a driving mechanism, the pick comprising a steel body with an axial shank disposed within a bore of the holder and comprising a tip with a hardness greater than HV; positioning the driving mechanism adjacent to the formation; and degrading the formation with a spring loaded pick by activating the driving mechanism.
The formation may be pavement, coal, soil, rock, limestone, or a combination thereof. The rotating chain A rotates in the direction of the arrow and cuts the formation forming a trench while bringing the formation cuttings out of the trench to a conveyor belt A which directs the cuttings to a side of the trench. The rotating chain A is supported by an arm A. The arm A may be raised while the machine is being transported or it may be lowered for trenching as shown in FIG.
The position of the arm A may be controlled by a hydraulic piston and cylinder A. The motor vehicle A may move about the formation A by tracks A, wheels, or a combination thereof. A seat A for an operator is positioned on the side of the motor vehicle A.
The pick B has a carbide core B attached to an impact tip B and is press fit into a recess B of a steel body B. The steel body B has a shank B which is press fit into a cavity B of a carrier B so as to have a base B of the pick B flush against a distal end of the carrier B.
The shank B has a flange B that extends into a recess B of the cavity B of the carrier B that keeps the shank B interiorly locked to the carrier B.
The carrier B has indents B so as to stay within a cavity B of a holder B. The holder B has fingers B that interface with the indents B so as to limit the movement of the pick B. The holder B includes a spring mechanism B that may be made of steel. The spring mechanism B may be a Belleville spring or a stack of Belleville springs to control the spring constant or amount of deflection.
The springs are stacked in alternating directions resulting in greater deflection. The spring mechanism B may also be stacked in the same direction creating a stiffer joint. Mixing and matching directions allow a specific spring constant and deflection capacity to be designed. The pick B impacts the formation B in the direction of the arrow B creating pressure on the spring mechanism B.
With applied pressure, the spring mechanism B compresses allowing the pick B to retract slightly from the formation B. When pressure is taken away from the pick B, it returns to its original position. Spring loading the pick B causes the picks B to vibrate and move in a recoiling motion B across the formation B which is optimized for the wear life of the pick B.
The recoiling motion B reduces the effects of drag and eventual wear on the pick B. In some embodiments, when no pressure is applied to the pick B at least one of the Belleville springs generally has a 45 degree angle B from a pick central axis B. When the pick B engages the formation B and pressure is applied, the spring may potentially compress to a lesser angle.
The holder B is welded to a plate B horizontally bolted onto a chain B which moves in the direction of the arrow B. As the pick B travels and degrades the formation B, it carries the formation cuttings with it exposing new formation B for engagement with adjacent picks. The pick C comprises a steel body C having a shank C extending from a base C of the steel body C. A cemented metal carbide core C is press fit into the steel body C opposite the shank C. The steel body C may have a length C from a distal end C to the steel base C.
In some embodiments of the invention, the carbide core C may be press fit into a majority of the length C of the steel body C. An impact tip C is bonded to a first end C of the metal carbide core C.
The impact tip C has a working surface made of a superhard material C. The superhard material C may be diamond, polycrystalline diamond with a binder concentration of 1 to 40 weight percent, cubic boron nitride, refractory metal bonded diamond, silicon bonded diamond, layered diamond, infiltrated diamond, thermally stable diamond, natural diamond, vapor deposited diamond, physically deposited diamond, diamond impregnated matrix, diamond impregnated carbide, monolithic diamond, polished diamond, course diamond, fine diamond, nonmetal catalyzed diamond, cemented metal carbide, chromium, titanium, aluminum, tungsten, or combinations thereof.
The superhard material C may be a polycrystalline structure with an average grain size of 10 to microns. Referring now to FIG. The superhard material C may be at least 4, HV and in some embodiments it may be 0. In some embodiments, where the superhard material is a ceramic, the material may have a region, near its surface, that is free of binder material. Infiltrated diamond is typically made by sintering the superhard material C adjacent a cemented metal carbide substrate C and allowing a metal such as cobalt to infiltrate into the superhard material C.
As disclosed in FIG. In some embodiments, the impact tip C may be connected to the core C before the core C is press fit into a recess of the body C. Typically, the cemented metal carbide substrate C of the impact tip C is brazed to the core C at a planar interface C.
The impact tip C and the core C may be brazed together with a braze having a melting temperature from to degrees Celsius. During HTHP processing, some of the cobalt may infiltrate into the superhard material such that the cemented metal carbide substrate C comprises a slightly lower cobalt concentration than before the HTHP process. The superhard material C may comprise a 6 to 20 percent cobalt concentration by volume after the cobalt or other binder infiltrates the superhard material C.
The superhard material C may also comprise a 1 to 5 percent concentration of tantalum by weight. Other binders that may be used with the present invention include iron, cobalt, nickel, silicon, carbonates, hydroxide, hydride, hydrate, phosphorus-oxide, phosphoric acid, carbonate, lanthanide, actinide, phosphate hydrate, hydrogen phosphate, phosphorus carbonate, alkali metals, ruthenium, rhodium, niobium, palladium, chromium, molybdenum, manganese, tantalum or combinations thereof.
In some embodiments, the binder is added directly to the superhard material's mixture before the HTHP processing and does not rely on the binder migrating from the substrate into the mixture during the HTHP processing. The superhard material C may have a substantially pointed geometry with a sharp apex comprising a radius of 0. In some embodiments, the radius is 0. The apex may be adapted to distribute impact forces, which may help to prevent the superhard material C from chipping or breaking.
The superhard material C may have a thickness of 0. The superhard material C and the substrate C may comprise a total thickness of 0. The sharp apex may allow the high impact resistant pick C to more easily cleave pavement, rock, or other formations. A radius C on the second end C of the core C may have a smaller diameter than the diameter C of the cemented metal carbide core C. Placing the reentrant C near the intersection C may relieve strain on the intersection C caused by impact forces.
In one embodiment, the pick D is axially spring loaded with a coil spring D. In another embodiment, the pick E is axially spring loaded with an elastomeric material E disposed within a holder D. In some embodiments, the spring mechanism F may be a Bellville spring F or it may be a stack of Bellville springs. In the embodiments of FIG. The spring mechanism G may be attached to a pivot G with the spring mechanism G pushing on the holder G.
In some embodiments, the holder G may have a geometry G which inherently has a spring constant suited for trenching applications. Blocks may be used to control how the holders G vibrate. In other embodiments, the pick G may comprise an arrangement similar to a spring loaded center punch or a piano hammer to affect the vibration in the trenching action. The arm supporting block includes an axel around which an arm H pivots.
In one embodiment, the dampening element may be a hydraulic shock absorber positioned between the arm supporting block and the trenching machine H. The hydraulic shock absorber may dampen the vibration felt by an operator at the operator's seat H on the trenching machine H. In some embodiments, the arm supporting block o sits upon a dampening element such as an elastomeric material The operator's seat H is positioned near a control panel that controls the operations of the trenching machine H.
In other embodiments of the invention, the trenching machine H may be controlled remotely, so that an operator positioned on the trenching machine H may not be necessary. In such embodiments, the trenching machine may H be controlled through Wi-Fi, Bluetooth, radio wave, or a combination thereof.
Hold Coal India, target price Rs 150: ICICI Direct
This site uses cookies to improve your experience on our site. By continuing to use the Fidelity Digital Assets website, you consent to the use of cookies in accordance with our Cookie Policy. In this piece, we review and respond to criticisms and misconceptions that continue to come up in our conversations. The criticisms outlined below have been addressed many times over, but we wanted to share an updated response given the increase in attention on Bitcoin. As we discuss in our report on Bitcoin as an Aspirational Store of Value , the trajectory of a new asset from negligible awareness and adoption to a global store of value is unlikely to be linear.
Blockchain’s Energy Crisis
Pharmaceuticals and Biotechnology. Professional and Business Services. Sandburg Middle School Investigation. Table of Contents. Cryptocurrency assets borrowings including cryptocurrency assets borrowings of the consolidated VIEs without recourse to BIT Mining Limited of nil and nil as of December 31, and June 30, , respectively. Amounts due to related parties including amounts due to related parties of the consolidated VIEs without recourse to BIT Mining Limited of nil and nil as of December 31, and June 30, , respectively. The accompanying notes are an integral part of these unaudited interim condensed consolidated financial statements. The accompanying notes are an integral part of the unaudited interim condensed consolidated financial statements. BIT Mining Limited formerly, The Company announced the entry into the cryptocurrency industry in December
Alaska-Pacific Consolidated Mining Company records
Mining Claims L, , , , , , , , to , both inclusive, to , both inclusive, and , situate in the Township of Milner; and , , , , and , and to , both inclusive, situate in the Township of Van Hise, situate in the Township of Van Hise, in the Larder Lake Mining Division, recorded in the name of Lake Superior Resources Corporation, hereinafter referred to as the "Superior Mining Claims";. The parties are further advised that, should a valuation of the Mining Claims become necessary, further evidence and submissions will be required to assist the tribunal in reaching its determination as to what portion of Randsburg International Gold Corporation's interest will be vested in the Applicant. This Tribunal further advises that pursuant to subsection 4 of the Mining Act as amended, a copy of this Order shall be forwarded by this tribunal to the Provincial Mining Recorder who is hereby directed to amend the records in the Provincial Recording Office as necessary and in accordance with the aforementioned subsection 4. An agreement dated the 16 th day of July, , between Randsburg International Gold Corporation, as contractee and W. The hearing of this matter took place in the Courtroom of the Tribunal, 24 th Floor, Bay Street, Toronto, on May 17 through 19 and on June 21,
CA2757795A1 - Polygon-shaped carbide tool pick - Google Patents
House that I have received from His Excellency the GovernorGeneral the following communication in connection with the Addressin Reply:. The humble petition of the undersigned citizens of Australia respectfully sheweth:. Your petitioners most humbly pray that the House of Representatives in Parliament assembled will take immediate steps to -. The petition of the undersigned electors ofthe Commonwealth of Australia respectfully showeth that the crippling diseases of rheumatism arthritis and a number of other distressing complaints long resistant to treatment by medical means are now being successfully treated in Australia by acupuncture. We humbly ask the Commonwealth Government to legislate to make treatment by acupuncture a claimable item under the National Health Scheme, and further, that the Commonwealth Government set up a free Clinic of Acupuncture under Government control, and your petitioners as in duty bound will ever pray.
Hedging renewable energy investments with Bitcoin mining
The company, ZCCM, was formed by a gradual process of nationalization and corporate concatenation which began in January ; the process is more completely described in the article Economy of Zambia. However, foreign-owned banks such as Barclays , Standard Chartered and Grindlays successfully resisted takeover. The management contracts under which day-to-day operations of the mines had been carried out by Anglo American and RST were ended in However, after nationalisation , copper prices started declining, oil prices increased and the effects of using the mining industry as a cash cow started showing. Copper production in Zambia plummeted — from its peak of , tonnes , short tons in to , tonnes , short tons in We had no option," said then Minister of Finance Edith Nawakwi. As part of the privatization process, the company's mining assets were unbundled and sold off as separate new entities or business packages to the private sector. The reason for unbundling the ZCCM Ltd into business packages was to promote diversity of ownership and minimise political and economic risks.
Melbourne Journal of International Law
You know, Baileys Irish Cream. I did that back in My mother absolutely adores it.
US8342611B2 - Spring loaded pick - Google Patents
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PAYMENT OF BONUS ACT
R All. Bank Ud. Industrial Tribunal , 58 F. Deputy Labour Commissioner, 62F. Indian Tool Mfrs. Krishnamurthy v. Presiding Officer, Labour Court.
Midwest plan hangs on 1973 agreement
You can contact them by sending an email to albasu dclgroup. It is classified as a Non-govt company and is registered at RoC-Shillong. Their state of registration is Meghalaya. Its authorized share capital is
And how to periphrase it?
I believe that you have been deceived.