science

Underground personnel carrier

Underground personnel carrier is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Underground personnel carrier rather than just read about it. In short: An underground personnel carrier is any heavy duty vehicle designed specifically for the safe transport of personnel and their supplies into underground work areas. The most common underground applications is for the mining of either precious metal or coal.

Key takeaways

Underground personnel carrier belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Underground personnel carrier to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Underground personnel carrier from memory before moving on to harder problems.

Reference excerpt

An underground personnel carrier is any heavy duty vehicle designed specifically for the safe transport of personnel and their supplies into underground work areas. The most common underground applications is for the mining of either precious metal or coal.

Types

Narrow vein applications 5- and 7- man personnel carrier Where tight turning in confined spaces is necessary, personnel carriers designed on tractors are common. Heavy duty fenders, bumpers and man baskets (gondolas) are fabricated to mount on the tractor or tractor frames to provide more durability.

Front loader personnel carrier These personnel carriers use a front loader to perform various loader applications. Also a front basket is typically attached to the front loader arms so that they may be lifted. These carriers are typically built to carry 5 or 7 men.

Towing personnel carriers Some personnel carriers use a heavy duty hydraulic rear hitch that can tow various attachments. Towing PCs can be used in conjunction with a front loader as well.

Attachments Other narrow vein personnel carriers are designed for a specific job based on their attachments. These attachments include rear and/or front lift baskets for utility and electrical work, mechanic packages, cable reels, heavy duty canes, ANFO loaders, and shotcrete booms.

Specialty built These personnel carriers are designed and built from the ground up. They are typically 5 man to 15 man carriers. These carriers may also be designed using multiple attachments for job specific applications.

Low profile In the coal mining industry low profile personnel carriers are the most commonly used. These carriers may only have a 3 to 3.5 feet (0.91 to 1.07 m) height dimension and carry up to 14 men, and are typically built from the ground up and can be designed with job specific attachments.

Mantrip

A mantrip is a shuttle for transporting miners down into an underground mine at the start of their shift, and out again at the end. Mantrips usually take the form of a train, running on a mine railway and operating like a cable car. Mantrips may also be self-powered, for example by a diesel locomotive. Other types of mantrips do not require a track and take the form of a pickup truck running on rubber tires. Because many mines have low ceilings, mantrips tend to have a reduced height. In the United States, the Mine Safety and Health Administration has published safety regulations governing the operation of mantrips.

References

External links Kentucky Educational Television, Lexington, KY. "Mantrip." Archived 2016-03-03 at the Wayback Machine Electronic Field Trip to a Coal Mine. Accessed 2010-06-06.

Worked examples

Example 1 — a first encounter with Underground personnel carrier

Start with the simplest possible case. Write down what Underground personnel carrier claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Underground personnel carrier before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Underground personnel carrier ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Underground personnel carrier

In research: Underground personnel carrier appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Underground personnel carrier in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Underground personnel carrier is common in secondary-school and first-year university syllabi. It links to neighbouring topics Mining equipment, so understanding it makes those chapters shorter.
In everyday life: Look for Underground personnel carrier outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Underground personnel carrier in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Underground personnel carrier means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Underground personnel carrier out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Underground personnel carrier in simple terms?

Why does Underground personnel carrier matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Underground personnel carrier?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Underground personnel carrier.