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Twin Shaft disaster

Twin Shaft disaster 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 Twin Shaft disaster rather than just read about it. In short: The Twin Shaft disaster occurred in the Newton Coal Company's Twin Shaft Colliery in Pittston, Pennsylvania, United States, on June 28, 1896, when a massive cave-in killed fifty-eight miners. Disaster At 3:00 in the morning on Sunday, June 28, 1896, ninety miners were at work in the Red Ash Vein of the Newton Coal Company's Twin Shaft Mine in Pittston when the roof quickly caved in.

Twin Shaft disaster — main illustration
Twin Shaft disaster — illustration

Key takeaways

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

Reference excerpt

The Twin Shaft disaster occurred in the Newton Coal Company's Twin Shaft Colliery in Pittston, Pennsylvania, United States, on June 28, 1896, when a massive cave-in killed fifty-eight miners.

Disaster At 3:00 in the morning on Sunday, June 28, 1896, ninety miners were at work in the Red Ash Vein of the Newton Coal Company's Twin Shaft Mine in Pittston when the roof quickly caved in. It was believed at the time that all of the men perished. The concussion from the explosion was so great that it was heard for miles around. The foundation of nearly every building in Pittston was shaken and windows and doors were rattled as in a tornado. In the houses nearer to the mine, persons were thrown from their beds, thinking an earthquake had occurred. Immediately after the boom, the colliery whistle and town fire alarms sounded. Families ran to the mine works. Newspapers reported "havoc everywhere," from grief-stricken wives to frantic efforts at impenetrable tunnels of collapsed top rock and crushed timbers. Two rescue tunnels were attempted, though volunteers sometimes removed only 20 feet (6.1 m) a day. Hope faded for the victims of the disaster, most of whom were Irish and Lithuanian immigrants. Their names were compiled later because the list of those working was also underground. There were 58 men and boys who died during the cave-in, buried 434 feet (132 m) below ground. In their wake, they left 31 widows and 101 orphans. None of their bodies were ever recovered. It was one of the largest coal mining disasters in Pennsylvania history (even larger than the Knox Mine disaster many decades later in nearby Port Griffith).

Aftermath

On July 10, 1896, testimony began in a formal investigation ordered by Pennsylvania's Governor Hastings to learn why the disaster happened, whether mining laws had been obeyed, and what might prevent future tragedies. Testimony revealed that there had been an audible "squeezing" of the pillars about two weeks prior to the accident — a sure sign that a wall or shaft was about to crumble. A miner named Edward Hughes defied his boss and left his shift early the night of the disaster because "the crackling grew worse." The superintendent ordered extra props put up to provide additional support. Apparently, however, these props were not placed strategically and once a section of the wall gave way, the others collapsed like a house of cards. In total, about 200 acres (81 ha) had caved in. The investigating committee suggested that pillars of coal should be left standing for safety and not "robbed" of their coal, especially when two seams are mined at once, and that maps of mine workings and air tunnels be provided to mine inspectors. Rescue operations at Twin Shaft were slowed by the absence of such maps. The Governor's investigative commission first issued its safety recommendations on September 25, 1896. These recommendations would often be ignored in subsequent years. The disaster played a major role after 1900 in the stronger unionization of Northeastern Pennsylvania under the leadership of John Mitchell. Today a marker stands in the area where the event occurred.

See also Avondale Mine disaster

References

Illustrations

Twin Shaft disaster: Hundreds gather at the site of the Twin Shaft disaster immediately after the cave-in (1896).
Hundreds gather at the site of the Twin Shaft disaster immediately after the cave-in (1896).
Twin Shaft disaster: Governor Daniel H. Hastings ordered an inquiry into the cause of the mine disaster.
Governor Daniel H. Hastings ordered an inquiry into the cause of the mine disaster.

Worked examples

Example 1 — a first encounter with Twin Shaft disaster

Start with the simplest possible case. Write down what Twin Shaft disaster 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 Twin Shaft disaster 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 Twin Shaft disaster 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 Twin Shaft disaster

In research
Twin Shaft disaster 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 Twin Shaft disaster 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
Twin Shaft disaster is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1896 disasters in the United States, 1896 in Pennsylvania, 1896 mining disasters, so understanding it makes those chapters shorter.
In everyday life
Look for Twin Shaft disaster 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 Twin Shaft disaster in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Twin Shaft disaster 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 Twin Shaft disaster out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Twin Shaft disaster in simple terms?

The Twin Shaft disaster occurred in the Newton Coal Company's Twin Shaft Colliery in Pittston, Pennsylvania, United States, on June 28, 1896, when a massive cave-in killed fifty-eight miners. Disaster At 3:00 in the morning on Sunday, June 28, 1896, ninety miners were at work in the Red Ash Vein of…

Why does Twin Shaft disaster 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 Twin Shaft disaster?

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 Twin Shaft disaster.

Tags

  • 1896 disasters in the United States
  • 1896 in Pennsylvania
  • 1896 mining disasters
  • Coal mining disasters in Pennsylvania
  • Disasters in Pennsylvania
  • Engineering failures
  • History of Luzerne County, Pennsylvania
  • June 1896 in North America
  • Pittston, Pennsylvania

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