Urban Dictionary: double down

Originally a term used in the card game blackjack, where a player doubles their original bet in exchange for exactly one additional card; most useful when the remaining deck is offering extremely favorable odds of making a total of twenty-one. The term is increasingly used as a media euphemism when political figures tell bald-faced lies and when confronted with contradictory statements, the ...

double back up method in mining - wimmaasse.nl

double back up method in mining. mining-guides-zybez runescape, so sit back and relax, while we try to explain the wonderful skill of mining as simply and clearly as possible, the sacred clay pickaxe awards double the normal experience gained for every ore mined, simply fill up your inventory with iron ore, teleport into the resource dungeon ...

Tunnel boring machine - Wikipedia

These Tunnel boring machine generally vary from 1 to 1.5 m (3.3 to 4.9 ft), too small for operators to walk in. Back-up systems. Behind all types of tunnel boring machines, inside the finished part of the tunnel, are trailing support decks known as the back-up system.

mining engineering: Loading

Jun 10, 2010· Double Back-up: Problems 1. Greater skill required of truck operator 2. Half of the trucks loaded on the "blind" side 3. Adequate mining area is necessary 4. Not suited to low face work as frequent shovel moves are required 5. As compared to drive-by: a. Moves require more dozer assistance b. Pit grade is more difficult to maintain Single ...

O-Rings and Back-up Rings - tss.trelleborg.com

O-RINGS AND BACK-UP RINGS 4 • TRELLEBORG SEALING SOLUTIONS Latest information available at • Edition December 2016 101 101 101 106 108 111 112 113 D Special O-Rings D.1 Isolast® (FFKM) O-Rings D.2 FEP/PFA encapsulated O-Rings

A New Mining Method - Double Post Mining (2)

alternative mining methods which would vastly improve production and safety at their mines. A dinner meeting at the PDAC in Toronto in March 2010 between Ivan Arriagada, then with Wardrop (Tetra Tek), and Armando Sanchez of Penoles led to a discussion of Double Post Mining (hereafter referred to as "DPM"). This led to a DPM

Surface Mining Methods and Equipment

appropriate mining method is selected based on technical, economic, and environmentally accountable considerations. The first step in selecting the most appropriate mining method is to compare the economic efficiency of extraction of the deposit by surface and underground mining methods . This section reviews surface mining methods and ...

How do I round a number in Groovy? - Stack Overflow

Mar 10, 2018· How do I round a number in Groovy? I would like to keep 2 decimal places. ... Not if you are using groovy's default decimal numeric BigDecimal because when you cast that double back to a BigDecimal it get's ugly ... Looking at @sjtai's and @cdeszaq's answers you don't need to get mixed up with mixin if you just define a method like this: def ...

4 Ways to Back Up Data - wikiHow

Jun 15, 2018· How to Back Up Data. This wikiHow teaches you how to back up the data on your computer or smartphone. Backing up your computer or phone creates a copy of its data so that you can restore it later if your computer, phone, or tablet is damaged or erased. Connect an external hard drive to your Windows computer. You can...

Cutting Machines - Shearers | Introduction | underground COAL

Equipment Cutting Machines - Shearers. Shearers are by far the most commonly used cutting machines, both in Australia and overseas. A shearer consists of a machine body containing electric motors, hydraulic equipment and controls which is mounted over the AFC.

Shovel Mining Methods Flashcards | Quizlet

Shovel Mining Methods study guide by johannva includes 30 questions covering vocabulary, terms and more. Quizlet flashcards, activities and games help you improve your grades.

Plaster Application: The Double-back or Double-up Method

Plaster Application: The Double-back or Double-up Method . Questions frequently arise as to the adequacy of the double-back method of plaster application. In times past, we used to require a delay of at least 24 hours for curing of the scratch coat prior to application of …

Elite Dangerous Mining Complete Guide | GuideScroll

Elite Dangerous Mining Complete Guide by LocNor. Welcome to mining! I'm going to assume if you made it to this guide then you're probably familiar with the basics. In summary, gear up a ship, go to a planet with rings or a an asteroid field, drop in, laser rocks, and pick up the pieces, money. Easy. OK lets pick that apart and look at it.

Surface Mining PriMary Loading TooL - Witraktor

double-side loading method for added efficiency . This method allows the rope shovel to load one truck while another truck gets into position on the other side, for continuous loading . Trucks are positioned up to 7 meters (20 feet) away from the rope shovel's crawlers throughout the loading cycle, helping to …

Bitcoin - Wikipedia

Bitcoin (₿) is a cryptocurrency, a form of electronic cash.It is a decentralized digital currency without a central bank or single administrator that can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries.. Transactions are verified by network nodes through cryptography and recorded in a public distributed ledger called a blockchain.

How to Mine Ethereum: Building an Ethereum Mining Rig

Mining is to the blockchain what prospecting is to gold. Here's everything you need to know about how to mine Ethereum, including a step-by-step guide on how to build an Ethereum mining rig.

3M™ Double Sided Tapes | 3M United States

3M™ Double Sided Tapes feature an internal carrier, such as polyester film, tissue or paper. The internal carrier is coated on both sides with specialty formulated adhesive and then matched to a removable liner. 3M™ Double Sided Tapes have more dimensional stability than adhesive transfer tapes and are applied both manually or through automated equipment.

Surface Strip Coal Mining Handbook - sacea.org.za

Operating and management experiences in strip coal mining are not reflected to any great degree in this handbook, rather, the basic generic principles, approaches and criteria of the mining method itself, together with the selection, application and operation of capital equipment for the various strip mining sub-system activities are highlighted.

Planning Open Pit Mining Operations Using Simulation

Planning Open Pit Mining Operations Using Simulation Dy ALAN ,· 8.St., Ph.D. and PETER N. CALDER, t B.Eng., M.Se., Ph.D. SYNOPSIS TIte complexity of modem open pit load-haul-dump systems is described, and the peed for realistic woooog models is pointcd out.

Simple but complete guide to mining. : EliteDangerous - reddit

The Mynthon can bring in 3-5mil (6+ if you stack mining missions) per hour reliably using the School 2 method, it would be back on site mining again before the bigger fair have finished their first trip. NEW - Dropship: By request. Its a more armored Asp with slightly …

Shovel Mining Methods Flashcards | Quizlet

Four Major shovel mining methods - double back up - single back up - drive by - modified drive by. Double Back Up - shovel tracks are aligned perpendicular to muck pile - shovel digs straight ahead - trucks reverse in and are loaded at both sides of the shovel

Types of Underground Mining Method Comparison

In any discussion of Methods of Underground Mining Comparison, one is repeatedly confronted with the difficulty of dealing with so many variable conditions. It is not an exact science and in the choice of a method each varying factor has a certain weight, which, in many cases, experience alone can determine.

Doubling up - definition of doubling up by The Free Dictionary

Define doubling up. doubling up synonyms, doubling up pronunciation, doubling up translation, English dictionary definition of doubling up. adj. 1. Twice as much in size, strength, number, or amount: a double …

Vanilla Mining Guide (1-300) - Legacy-WoW - Addons and ...

This bit is easy. Mine about 50 copper and smelt. You can use any of the following suggestions for mining routes or make up your own, as copper is so abundant: *At level 50, go back to the mining trainer and learn Journeyman Mining. Horde. Undead: Start at …

The equipment utilisation versus mining rate trade-off in ...

• The double back-up method: the shovel faces the material allowing a double side loading activity. Generally, it maximise the shovel performance because of the lower swing angles and less delay times associated with truck manoeuvres. The double back-up method The single back-up method The drive-by method The modified drive-by method Figure 2.

What are the main methods of mining? | American ...

What are the main methods of mining? PDF version. There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits. ...

Optimization of shovel-truck system for T surface mining

surface mining by S.G. Ercelebi*, and A. Bascetin† Synopsis In surface mining operations, truck haulage is the largest item in the operating costs, constituting 50 to 60% of the total. In order to reduce this cost, it is necessary to allocate and dispatch the trucks efficiently. This paper describes shovel and truck operation models

® Electric Rope Shovels: Loading Methods - YouTube

Oct 21, 2014· This Electric Rope Shovel Loading Method video demonstrates the four loading methods for electric rope shovel and truck operations: single back-up, double back-up…