Contains among other things: Request for mutation - finding and finding point determination - legal documents - transfer to the ownership of Ilse Bergbau A. G. zu Grube Ilse.

Contains among other things: Inquiry of the Imperial Government of D e u t s c h - O s t a f r i k a for the purpose of supplying two drilling rigs - Transcript of the report of the Governor of D e u t s c h - O s t a f r i k a from Darressalam on deep boreholes - Inquiry of the Chinese Schantung Mining Company concerning inspection of official instructions etc. concerning drilling work.