This item contains the following correspondence:

1. 9 May 1983. Handwritten letter, written on CSIRO letterhead, discussing attendance at the 'Gemboree' in Broken Hill (NSW), presenting a talk on the phosphates of NE South Australia, the composition of the phosphates, the occurrence of minerals at Fairview Quarry (SA), and specimen collecting. Two pages.
   
   
2. 11 May 1983. Handwritten letter, written on CSIRO letterhead, discussing research into phosphate minerals and requesting information about iron and manganese phosphates. One page.
   
   
3. Undated. Typewritten fourteen page manuscript of a paper by Mumme titled 'Phosphates in NE South Australia'. Jim Johnson's name is written in pen on the first page. Eight pages (double-sided).
   
   

Australian locations mentioned in this correspondence include Broken Hill (NSW), Fairview Quarry (SA), Olary (SA), Flinders Ranges (SA), Tarcowie (SA), Boolcoomatta (SA), Wiperaminga Hill (SA), Ameroo (SA), Meningie Well (SA), Bimbowrie (SA), Mount Painter (SA), Wooltana (SA), Blinman (SA), and Reaphook Hill (SA).

Individuals mentioned in this correspondence include Max Ratcliff, Vince Peisley, W Coulston, A Whittle, J Taylor, E Finch, HO Pederick, D Roman, R Segnit, Dr John Taylor, Ken Watson, L Lines, Ian Catford, RO Chalmers, D King, B Campana, WH Knapman, RJ Hill, JB Jones, FJ Pettijohn, F Smithson, and RL Jack.