MCF Mining Approvals IndexData as at 18 October 2026 · from Western Australian Government registers and open data
Tenement holder · Western Australia
SUNNYLAKE HOLDINGS PTY LTD
SUNNYLAKE HOLDINGS PTY LTD holds 8 current Western Australian mining tenements (6 mining leases, 1 miscellaneous licence, 1 exploration licence) covering 2,382 hectares.
8tenements
2,382hectares
1projects
0EPA statements
2closure plans
Projects (MINEDEX)
| Project | Stage | Owners (MINEDEX) | Its tenements |
|---|---|---|---|
| Cowcowing Lakes South - Wyalkatchem / Sunnylake | Operating | Sunnylake Holdings Pty Ltd 100%; The Trustee For Westdeen Unit Trust 0%; Westdeen Holdings Pty Ltd | 7 |
Rehabilitation liability
Its rehabilitation liability, per tenement and in total, is in the MCF Mining Index (subscribers): the Mining Rehabilitation Fund estimate, its trend since 2014, company provisions and closure-plan costs.
Mine closure plans
| Site | Operator | Latest plan approved | Plan (PDF on GeoDocs) | Closure year |
|---|---|---|---|---|
| Cowcowing | Gypsum Industries of Australia | 23 April 2025 | Mine Closure Plan - Cowcowing - J00810 - S0223030 | |
| Cowcowing Lakes | Westdeen Holdings Pty Ltd | 27 March 2020 | Mining Proposal Cowcowing Lakes |
Tenements
| Tenement | Holder | Status | Expires | Commodities | Project | Hectares |
|---|---|---|---|---|---|---|
| M 70/171 Mining lease | SUNNYLAKE HOLDINGS PTY LTD | Granted | 4 February 2027 | Gypsum | Cowcowing Lakes South - Wyalkatchem / Sunnylake | 4 |
| M 70/172 Mining lease | SUNNYLAKE HOLDINGS PTY LTD | Granted | 4 February 2027 | Gypsum | Cowcowing Lakes South - Wyalkatchem / Sunnylake | 23 |
| M 70/173 Mining lease | SUNNYLAKE HOLDINGS PTY LTD | Granted | 4 February 2027 | Gypsum | Cowcowing Lakes South - Wyalkatchem / Sunnylake | 56 |
| M 70/264 Mining lease | SUNNYLAKE HOLDINGS PTY LTD | Granted | 7 October 2028 | Gypsum | Cowcowing Lakes South - Wyalkatchem / Sunnylake | 2 |
| M 70/559 Mining lease | SUNNYLAKE HOLDINGS PTY LTD | Granted | 21 May 2032 | Gypsum | Cowcowing Lakes South - Wyalkatchem / Sunnylake | 51 |
| M 70/1078 Mining lease | SUNNYLAKE HOLDINGS PTY LTD | Granted | 8 December 2047 | Gypsum | Cowcowing Lakes South - Wyalkatchem / Sunnylake | 10 |
| L 70/195 Miscellaneous licence | SUNNYLAKE HOLDINGS PTY LTD | Granted | 24 October 2040 | Gypsum | Cowcowing Lakes South - Wyalkatchem / Sunnylake | 0 |
| E 70/6533 Exploration licence | SUNNYLAKE HOLDINGS PTY LTD | Granted | 22 October 2028 | 2,237 |