Answer:
One sheave means that you are using a single drum winder. They are the worst! Double drum winders control easier, brake better and are much more efficient. They save time ( two skips or cages) and can be clutched to perform faster shift transport. A single drum is slow, unbalanced and can be a nightmare if it trips out during hoisting. If the brake system is not perfect it can be a real hairy experience. For a runaway single drum, there is no counterbalance effect. It always runs to destruction. With a double drum, the driver still has a chance to control the winder to a certain extent and he has two sets of brakes to rely on. A single sheave could also mean a shaft with a single compartment. No second means of escape unless there are ladders or stairways. Not a very healthy situation.
Those are just a few points. I am sure much more can be said in favor of a double drum winder and two or more sheaves in the headgear. Most of the shafts I have worked at have multiple winders and up to ten compartments. They all have a small single drum service winder for emergencies and moves of personnel during shift times. They are referred to as the Mary - Annes. Apparently, the name originated in the U.K. where an aristocratic mine owner named the first such winder after his mistress.
Explanation:
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The type of hacker that is primarily moved by an ideology, epitomizing "the ends justify the means" mentality is Hacktivism.
<h3>What type of hackers are motivated by social or political issues?</h3>
Hacktivism is known to be an act of the wrong use a computer system or network for a socially or politically motivated aim or reason.
The type of hacker that is primarily moved by an ideology, epitomizing "the ends justify the means" mentality is Hacktivism and they are called hacktivist.
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Um maybe a glitch? Refresh your browser might help.
This is true. I'm not sure what you're asking here, but if it's a true/false statement, it's true.
Graphic design has as its goal the communication of some specific message to a group of people.
Specific is your answer.
