engineering

Ontario silver mine

Ontario silver mine is a engineering 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 Ontario silver mine rather than just read about it. In short: The Ontario silver mine is a mine that was active starting in 1872, and is located near Park City, Utah, United States. History The lode was discovered by accident on 19 January 1872 by Herman Budden, Rector Steen (Pike), John Kain, and Gus McDowell.

Key takeaways

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

Reference excerpt

The Ontario silver mine is a mine that was active starting in 1872, and is located near Park City, Utah, United States.

History The lode was discovered by accident on 19 January 1872 by Herman Budden, Rector Steen (Pike), John Kain, and Gus McDowell. The mine was purchased by George Hearst through R. C. Chambers from the prospectors for $27,000 on 24 August 1872. Hearst and his business partners James Ben Ali Haggin and Lloyd Tevis owned this mine and constructed the necessary infrastructure to make it productive, including hoists and stamp mill. The mine was not profitable for its first three years. According to legend, expenses of development substantially drained Hearst's financial resources. As a result of his straitened circumstances, Hearst sold his home and horses, and even dismissed his servants and enrolled his son William Randolph Hearst in public school. Chambers, who had been retained as manager, brought the bonanza ore body into production by the late 1870s. It eventually produced fifty million dollars' worth of silver and lead. By the time of Hearst's death in 1891, the Ontario mine had paid him more than $12 million in dividends. This was only one of the four big mines he had bought shares in and that were located in the West, including the Ophir on the Comstock Lode, the Homestake Mine (South Dakota), and the Anaconda Copper Mine (Montana). The mine also made manager Chambers one of Utah's Bonanza Kings. The Ontario mine was credited as being more consistent in yielding annual dividends during the late nineteenth century than any other mine in Utah. The Ontario company's mill was also the birthplace of two significant hydrometallurgical processes, the Russell Process and the Cyanide Process. Edward H Russell (Yale 1878) developed his process for working low grade silver ores by a leaching process, 1883–1884, and young Louis Janin (UC Berkeley) experimented with cyanide on the ores, filing a caveat to patent a cyanide process in 1886. Between 1874 and 1964, the Ontario Mine produced 41,289 ounces of gold, 55,710,608 ounces of silver, 164,231,209 pounds of lead, 210,350,684 pounds of zinc, and 3,911,102 pounds of copper. Primary ores included argentiferous galena, sphalerite, and tetrahedrite-tennantite with pyrite and quartz gangue. The Ontario mine reopened as a tourist attraction in 1995, only to close again after a few years.

Illustrations

Worked examples

Example 1 — a first encounter with Ontario silver mine

Start with the simplest possible case. Write down what Ontario silver mine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Ontario silver mine 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 Ontario silver mine 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 Ontario silver mine

In research: Ontario silver mine appears in engineering 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 Ontario silver mine 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: Ontario silver mine is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1872 in Utah Territory, Buildings and structures in Summit County, Utah, Hearst family, so understanding it makes those chapters shorter.
In everyday life: Look for Ontario silver mine 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 Ontario silver mine in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ontario silver mine 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 Ontario silver mine out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ontario silver mine in simple terms?

The Ontario silver mine is a mine that was active starting in 1872, and is located near Park City, Utah, United States. History The lode was discovered by accident on 19 January 1872 by Herman Budden, Rector Steen (Pike), John Kain, and Gus McDowell.

Why does Ontario silver mine matter?

Because it connects several engineering 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 Ontario silver mine?

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 Ontario silver mine.