Ann: Trading Halt-GXY.AX, page-161

As indicated by sampreap it may be about Silver City Minerals.
GMM/GXY may be taking a stake in it:

There seem to be some synergies with GMM and GXY for hard-rock pegmatite mining:

http://www.silvercityminerals.com.au/images/reports/2016/Lithium-In-Broken-Hill-Pegmatites.pdf



A S X A N N O U N C E M E N T

11 May 2016
Lithium in Broken Hill Pegmatites

Silver City Minerals has commenced assessment of lithium
in pegmatites at Broken Hill.

Extensive zones of pegmatite are known in Silver City tenements
Pegmatites outcropping over 100 square kilometres, comprising almost 8% of tenure.

Large pegmatite bodies up to 9 kilometres long and 2 kilometres wide.

No systematic exploration for lithium ever undertaken at Broken Hill.

Lithium minerals identified in the District

Anomalous indicator minerals.