The Figure shows an example of the application of the principle to a Continental grab built by the Augsburg- Niirnberg A. G. This is applicable for heavy ores, and the closing power is exceptionally great. This grab has been used for handling Thomas phosphates, which is one of the most difficult materials to deal with, and for which a heavy grab is necessary. The weight of the grab alone is 6 tons, and it has a capacity of approximately 2 cub. yds. ; the grab actually lifted in one operation over 3 tons of this material.