student exploring the factory

1 min 6 secs

12 mins 10 secs

14 mins

4 mins

8 mins 39 secs

7 mins

8 mins

2 mins 20 secs

24 mins 13 secs

12 mins 39 secs

3 mins 30 secs

5 mins 4 secs

8 mins

51 secs

9 mins 9 secs

1 hour 6 mins 44 secs

31 mins 6 secs

17 mins 38 secs

28 mins 18 secs

12 mins 34 secs

16 mins 55 secs

19 mins 45 secs

5 mins 21 secs

4 mins 4 secs

22 mins 8 secs

20 mins 16 secs

40 mins 10 secs

10 mins 46 secs

7 mins 34 secs

7 mins 24 secs

11 mins 24 secs

7 mins 11 secs

18 mins 2 secs

4 mins 40 secs

11 mins 49 secs

4 mins 15 secs

9 mins 46 secs

6 mins 38 secs

14 mins 33 secs

27 mins 55 secs