# Khan

Did you know that in 1935, every train at New York City's railway station used to pass through the shadow of a silent killer? Yes, it was not some supernatural power but a small thing called a 'hot box.' It was a bearing of the train wheels, which used to get hot due to the speed of the train. If it had a lack of oil, it would start emitting smoke or even catch fire! 😱
Up to the point that if the 'hot box' address was not found, the entire train could have been engulfed in flames, and hundreds of passengers could have been in danger. But there was a hero who was silently on duty - the 'hot bo