1 what disability did the first person to use the escalators have. 2 what is the voltage that the tube tracks/trains run on 3 how many miles of the london underground system is underground. 4 between which stations is the shortest stop.
1. He had a wooden leg
2. 630 V DC combined (I Think please check)
3. Have found various answers to this question but I am going for 253 miles
4. Paddington - Farringdon