How the collapse has developed?

The development up to the collapse of the dump slope system of Nachterstedt was high complexly, not trivial !!!

After the investigation of all destabilizing factors is clearly: No other dump slope was ill-treated so compactly by additional interventions, as the anyhow problematic dump slope system of Nachterstedt.
Finaly, the necessary resistance could no more be mobilized. The dump slope system collapsed.

The video arranges the development to the collapse compactly!
Video: How the collapse has developed? All rights; copy right © Dr.-Ing. Michael Lersow
update: 2012-02-09
Animation 2 eng.wmv