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Landsale

Landsale 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 Landsale rather than just read about it. In short: The landsale or land-sale system was a rental or tenement system occurring in the 18th and 19th centuries in Great Britain, named after the practice of local selling of coal and operation of small-scale "land sale" collieries. This was in contrast to the larger scale, and highly mechanized "water-sale" collieries exporting coal by sea and later canal to southern England.

Key takeaways

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

Reference excerpt

The landsale or land-sale system was a rental or tenement system occurring in the 18th and 19th centuries in Great Britain, named after the practice of local selling of coal and operation of small-scale "land sale" collieries. This was in contrast to the larger scale, and highly mechanized "water-sale" collieries exporting coal by sea and later canal to southern England. Land-sale coal was free of tax, and so coal users in coal producing areas could obtain coal free of duties for "water-sale coal" shipped by sea or canal, such as duties paid at the ports of London. The smaller local "land-sale" collieries were less productive, but also had lower costs as they paid lower wages to miners, or were rented by self-employed tenants. While winter weather affected all mines the smaller land sale collieries were more prone to lying idle. In the unusual case of the Wear Valley and South Durham land-sale miners were able to seasonally migrate to work on bigger water-sale collieries during part of the winter. The landsale tenement system involved the renting out of coal rights on land to smallholders to operate mines for rent. In Decisions of the Court of King's Bench 1793 it was stated that a "land sale colliery" was a "term well known in the coal mining areas" and understood as including not only the rental or tenement on the land to be mined, but also the required stock of horses, gins, ropes, and other things necessary for working the mine. Though whether the rent on the horses and gins were included was disputed in at least one case. Examples of landsale operations or rents under the landsale system include Brandon, County Durham where John Shaw was operating a landsale pit in 1836 using a whim-gin, usually employing horses or a bull, to raise the coal, Ushaw Moor Colliery where in 1858 a drift mine was established selling coal on this system, and Bedford Colliery at Guest Street where there was a landsale yard.

References

Worked examples

Example 1 — a first encounter with Landsale

Start with the simplest possible case. Write down what Landsale 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 Landsale 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 Landsale 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 Landsale

In research
Landsale 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 Landsale 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
Landsale is common in secondary-school and first-year university syllabi. It links to neighbouring topics Coal mining, so understanding it makes those chapters shorter.
In everyday life
Look for Landsale 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 Landsale in 20 minutes

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

Frequently asked questions

What is Landsale in simple terms?

The landsale or land-sale system was a rental or tenement system occurring in the 18th and 19th centuries in Great Britain, named after the practice of local selling of coal and operation of small-scale "land sale" collieries. This was in contrast to the larger scale, and highly mechanized "water-s…

Why does Landsale 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 Landsale?

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 Landsale.

Tags

  • Coal mining

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