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Why do coal miners use battery powered lamps rather than other lamps in tunnel?
Wiki User
∙ 10y ago
A battery powered lamp is any of several types of lamp that provides illumination in coal mines and is designed to operate in air that may contain coal dust or gases both of which are potentially flammable or explosive. Before the invention of the electric light around 1900, miners used flame lamps to provide illumination. Open flame lamps could ignite flammable gases which collected in mines, causing explosions and so battery powered lamp were developed to enclose the flame and prevent it from igniting the surrounding atmosphere. Flame safety lamps have been replaced in mining with sealed explosion-proof electric lights.
Wiki User
∙ 10y ago
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What are 3 tunnels in NYC?
Lincoln Tunnel, Holland Tunnel, Brooklyn Battery Tunnel.
How long is the battery tunnel?
9000 feet
How many tunnels to Manhattan?
There are four tunnels connecting to Manhattan: the Lincoln Tunnel, Holland Tunnel, Brooklyn-Battery Tunnel, and Queens-Midtown Tunnel. The Lincoln and Holland Tunnels connect New Jersey to Manhattan. The Queens-Midtown Tunnel connects Queens to Manhattan, and the Brooklyn-Battery Tunnel connects Brooklyn to Manhattan.
How many bridges connect Manhattan to the mainland?
There are four tunnels connecting to Manhattan: the Lincoln Tunnel, Holland Tunnel, Brooklyn-Battery Tunnel, and Queens-Midtown Tunnel. The Lincoln and Holland Tunnels connect New Jersey to Manhattan. The Queens-Midtown Tunnel connects Queens to Manhattan, and the Brooklyn-Battery Tunnel connects Brooklyn to Manhattan.
What is the largest continuous underwater vehicle tunnel in North America?
Brooklyn Battery
What is the longest continuous underwater vehicle tunnel in North America?
The Brooklyn-Battery Tunnel is in New York City and at 9,117 feet (2,779 m) is the longest underwater tunnel in North America.
How do you get kangaskhan in Pokemon Gold?
You can find it in the rock tunnel, but it is rather rare.
What tunnel was used in Men in Black?
I'm gonna go ahead and say the Brooklyn Battery Tunnel, seeing as they used their building as HQ in the movie
How many tiles make up the battery tunnel in New York?
10 million
What did Comstock Lode miners had to worry about?
Working the Comstock Lode was extraordinarily dangerous. Apart from the risk of cave-ins and underground fires, miners had to worry about underground flooding. The temperature of water below 700 feet rose to 108 degrees. When miners penetrated through rock, steam and scalding water would pour into the tunnel, and miners had to jump into cages, risking death if the hoisting mechanisms failed to lift them quickly enough.
Why do you use a train to cross the Channel tunnel rather than driving dirrectly through in your car?
The Channel tunnel (actually twin tunnels) is a railroad tunnel, the second-longest the world . There is no road inside save for the third tunnel, which is a single carriageway escape tunnel (special emergency vehicles, able to drive in either direction, were designed for this safety tunnel)
Where is the med bay in mass effect 2?
if you go to the tunnel leading you to the main battery it will be the door on the right.
