Video Discussion # 104: What caused this rail down?

Who can tell us what caused the rail down at :43? (Click on Video Discussion Title above (in blue) to read this educational discussion)

Sorry this page is available to subscribers only.
If you're not a subscriber why not join today?

If you are already a subscriber, please login.

If you believe you should be able to view this area then please contact us and we will try to rectify this issue as soon as possible.