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Diablo Resources (ASX:DBO) ADDITIONAL GROUND TARGETING USA CRITICAL MINERALS

Jane Morgan Management 3 mins read

HIGHLIGHTS

• Additional claims have been secured on strike from the currently being drilled, Philadelphia

Prospect at the Phoenix Copper Project.

• Previous rock chip sampling at Philadelphia along the Philly Fault Zone returned results

up to 45.7% Cu, over 750 metres of strike including4,5:

o 6m @ 2.13% Cu, incl. 1m @ 7.16% Cu

o 2m @ 2.40% Cu

o 3m @ 1.28% Cu

o 10m @ 0.55% Cu

• The Project is located along strike from the currently producing 740Mlb Lisbon Valley

Copper Mine (LVCC) within the world-class Lisbon Valley Mining District, Utah, USA1,2

.

• The U.S. Interior Department has recently proposed adding copper to the 2025 Critical

Minerals List10, recognising its importance to both the economy and national security. With

demand accelerating, policy momentum continues to highlight the strategic role of copper

in the clean energy transition.

• The claims were staked over BLM (Bureau of Land Management) administered lands and

a private grazing lease with Federal mineral rights to the southwest of the Philadelphia

Prospect.

• The Company’s maiden drill program within the CC Claim Block is ongoing9

 

CC CLAIM BLOCK

The CC Claim Block is located ~5 km northwest of the LVCC operations and ~3km south of

the historical Big Indian Copper Mine. It now consists of 166 unpatented lode claims for 3,320

acres staked on BLM administered Federal lands (Figure 1).

Exploration completed in 2025 has enabled the Company to identify 2 priority drill targets in

the CC Claim Block, Trenton and Philadelphia Prospects. Drilling commenced in August at

these targets and is ongoing, with initial results expected in 3-6 weeks.

PRIOIRTY STRUCTURAL TARGET SECURED

Additional unpatented Lode Claims have been staked on both BLM administered lands and

private grazing land on the southwestern edge of the CC Claim Block. A total of 18 claims for

360 acres have been staked to cover an additional 1,500m of interpreted strike of the Philly

Fault Zone, which is known to be mineralised within the project area, but lies undercover in

the newly acquired area.

A total of 8 claims covering private grazing land with Federal mining rights administered by

the BLM were staked and as such was subject to an extended process ( see Table 1). These

claims are in addition to the 15 claims staked and reported in the June 2025 Quarterly

Activities Report7

.

Earlier in the year at the Philadelphia Prospect, surface rock sampling (grab and channel)

from outcrop and dumps were collected over some 750m of strike and averaged 6.29% Cu

(Copper) with Cu and Ag (Silver) values ranging from 0.5% Cu to 45.7% Cu and to 219

g/t Ag (~7oz Ag)4

.

Chip channel sampling was also completed across five outcropping mineralised zones over a

400m strike length along the Philly Fault and possible subsidiary splays indicating multiple

mineralised zones. Results included4-5:

3m @ 1.28% Cu

6m @ 2.13% Cu, incl 1m @ 7.16% Cu

10m @ 0.55% Cu

3m @ 0.8% Cu and

2m @ 2.4% Cu

These results provided a compelling drill target at Philadelphia for the Company’s maiden drill

program which is ongoing.

A further five claims were staked in the NW corner of the CC Claim block.

 

UPDATE- USA CRITICAL MINERALS LIST10

The U.S. Department of the Interior, through the U.S. Geological Survey, recently released

the draft 2025 List of Critical Minerals and a report that outlines a new model for assessing

how potential supply chain disruptions could affect the U.S. economy.

The draft list, which includes copper,will guide federal strategy, investment, and permitting

decisions designed to secure the minerals needed to drive the U.S. economy and protect

national security.

Inclusion on the list, which is typically updated every three years, can make projects eligible

for federal funding, subject to a streamlined permitting process, or more competitive due to

fees placed on imports

 

NEXT STEPS

• Soil sampling has commenced within the newly acquired claims.

• The Company’s maiden drill program is ongoing within the CC Claim Block.

• Assay results from the ongoing drilling program expected in 3-6 weeks.


About us:

About us.

We are focused on creating shareholder value through the discovery and development of major copper and gold deposits in North America. The Company has three , 100% owned, quality projects located in the USA, Phoenix Copper Project, King Solomon Gold and Devils Canyon Gold Projects.


Contact details:

Jane Morgan - [email protected]

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