coal breaker造句

• The regulation of coal breakers came slowly in the United States.
• After 1900, a Murray coal breaker two miles west of Bernice.
• A wooden coal breaker featured heavily in the film was built as a prop.
• Until about 1900, nearly all anthracite coal breakers were labor-intensive.
• In 1891, Heyl & Patterson engineered its first coal breaker, upstate in Bradford, Pennsylvania.
• The modern coal breaker can be traced to 1844.
• Later, Harvey constructed one of Plymouth's first coal breakers.
• This area of the coal breaker was also where most dry screens and wet jigs operated.
• Dry culm was taken away from the coal breaker by conveyor belt or rail car and dumped nearby.
• By 1873, a coal breaker stood on the site, and in 1901, the D & H dismantled the breaker.
• The breaker was the last remaining coal breaker in Pennsylvania; there were once approximately 300 coal breakers in the state.
• The breaker was the last remaining coal breaker in Pennsylvania; there were once approximately 300 coal breakers in the state.
• Tipples, coal washing plants, and coal breakers were often merged into a single large plant to achieve economies of scale.
• Multiple sorting and picking levels might exist in a single coal breaker, depending on the amount of coal to be processed.
• By the 1970s, many coal breakers around the world were being shut down in favor of newer, larger coal preparation plants.
• Railroads could reach mine heads and coal breakers where no stream existed to support the costly digging of a new ditch.
• Where coal washing was used, the coal breaker was expanded to handle both " dry " and " wet " coal simultaneously.
• In the United Kingdom, the government enacted a law in the mid-19th century requiring that coal breakers be built away from mine entrances.
• Teenaged breaker boys at the A . S . Van Wickle coal breaker in the nearby village of Colerain struck for higher wages as well.
• But in the U . S ., neither the federal government nor the states adopted regulation of coal breakers until after many lives had been lost.