Central Iron Ore Limited - Drilling Results Finalised

(MENAFN- GlobeNewsWire - Nasdaq) VANCOUVER, British Columbia, Sept. 17, 2025 (GLOBE NEWSWIRE) -- Central Iron Ore Limited (CIO – TSX.V) (“CIO” or“the Company”) is pleased to announce this Drilling Update.

Central Iron Ore is pleased to announce that the results for the 2025 Phase 1 RC drilling campaign have been finalised.

Highlights:

• Assay results for the 78-hole, 10,264-meter 2025 Phase 1 RC program has been received and processed.
  
• Multiple significant intercepts have been intercepted across the target area (Table 1) some notable down-hole intercepts include:
  
  • 25BKERC_010: 1m @ 22.20g/t from 144 meters
  • 25BKERC_013: 2m @ from 126 meters
  • 25BKERC_019: 3m @ from 103 meters
  • 25BKERC_034: 5m @ t from 112 meters
  • 25BKERC_036: 1m @ from 131 meters
  • 25BKERC_037: 1m @ from 114 meters
  • 25BEKRC_031: 2m @ from 112 meters

• Geohydrological investigations are nearing completion. In addition, a program of approximately 801 metres of diamond drilling, comprising eight drillholes, is scheduled to commence in late October. The drilling is designed to support geotechnical studies intended to further inform the assessment and potential advancement of the British King Project toward mining.

• The British King Mineral Resource is currently being updated to include the results of the recent drilling.
  

Drilling Results

Interpretation of the RC drilling assay results has confirmed down dip extension of gold mineralisation across the prospect area as well as the development of three distinct high grade chutes, only one of which was defined by the 2024 resource update (Figure 1). The 2025 drilling has further supported the geological understanding of the deposit: gold mineralisation associates with a primary laminated bucky quartz lode with continuous development for nearly the entire 840 metres of strike targeted by the drilling campaign, gold mineralisation at depth has been confirmed in three areas. The lateral extent of the mineralisation has been defined with additional localised down dip extension identified. (Figure 1 to Figure 5).

Figure 1. Section plan for the 2024 Phase 1 and historical drilling

Quality Control/Quality Assurance (“QA/QC”) Statement

Reverse Circulation (RC) drilling samples were collected for every metric meter (m) downhole of the 2025 RC drill program. Sampling was done using a cone splitter mounted on the drill rig cyclone and stored in pre-numbered calico bags (single splits), sample size ranged from 2 to 3kg per meter.

Single splits of mineralized intersections up to 3m either side of the expected ore zones were selected for initial assay. 4m composited scoop samples were taken from the residual piles over the remainder of the hole that was not selected and submitted for initial assay. All un-assayed 1m split samples were temporarily left on site in their respective calico bags; once the composite samples where assayed, corresponding 1m single splits of the composite samples with grades greater than 0.40g/t were retrieved and submitted for assay.

Cyclone duplicate samples (twin samples) targeting mineralized zones were selected from predetermined intervals and assayed to check for the representativity of the sampling method. A Certified Reference Material (CRM) pulp, fine blank pulp and coarse blank was inserted at a rate of approximately every 1 in 25 samples, or at a higher frequency to ensure every drillhole had a set of checks for its specific sample runs.

Four gold Certified Reference Materials (CRM) were used; Geostats G399-5 Geostats G913-7 Geostats G915-4 and OREAS 254b Assay samples were placed into shipping bags together with the CRMs upon completion of each hole. All assay samples were transported bi- weekly in their respective shipping bags to Bureau Veritas Laboratory Kalgoorlie (BV), Western Australia. From drilling to delivery at the lab, all samples were maintained under the direct control and supervision of the on-site geological staff.

Upon arrival in Bureau Veritas Laboratory Kalgoorlie, the samples were prepared using Bureau Veritas Laboratory code PR302 (pulverize 2.5 kg split to 90% passing 75 microns) and fire-assayed for gold using Bureau Veritas Laboratory Code FA001 (40gm aliquot fire assay with AA finish). BV also inserts its own certified reference materials plus blanks and duplicates. All QA/QC results associated with the assays reported herein are within expectation, no errors were observed. BV is accredited to ISO/IEC 17025 standards for specific preparation and analytical procedures. For more information about Bureau Veritas Geochemistry, please visit the company's webpage at: .

Figure 2. Pierce Point Long section of the 2025 RC results. Down dip, high grade extension of the lode has been identified on the West, Central and Eastern portions of the ore body.

Figure 3. Section A-A': Continuous grade development has been confirmed at depth across the centre of the ore body.

Figure 4. Section B-B': multiple significant high grade intercepts have been identified

Figure 5. Section C-C': continuous down dip extension along the eastern edge of the deposit has been confirmed.

Table 1. Significant down-hole Intercepts for the 2025 Phase 1 RC Campaign. All reported intervals are down-hole lengths; true widths are not yet known.

Target	Hole ID	Hole Depth (m)	Dip	Azi	Collar Position	Significant down-hole intercepts
Easting	Northing	From (m)	To (m)	Interval (m)	Avg. Grade (Au g/t)
SDJV - M37/631	25BKERC_001	78	-60	358	326699	6908157	62	63	1	1.66
25BKERC_002	54	-60	358	326719	6908197	38	39	1	2.72
25BKERC_003	72	-60	358	326719	6908177	56	57	1	1.09
25BKERC_004	132	-60	358	326719	6908137				NSI
25BKERC_005	108	-60	358	326739	6908157	101	102	1	1.55
25BKERC_006	90	-60	358	326759	6908177				NSI
25BKERC_007	132	-60	358	326759	6908137	118	119	1	1.45
25BKERC_008	132	-60	358	326779	6908157	115	116	1	3.16
25BKERC_009	150	-60	358	326819	6908157	131	133	1	8.59
25BKERC_010	156	-60	358	326855	6908158	144	145	1	22.2
25BKERC_011	156	-60	358	326899	6908157	130	131	1	0.8
and						146	147	1	2.03
25BKERC_012	108	-60	358	327259	6908237	94	95	1	4.39
25BKERC_013	144	-60	358	327259	6908197	126	128	2	10.59
inc.						127	128	1	19.5
25BKERC_014	186	-60	358	327259	6908157				NSI
25BKERC_015	126	-60	358	327279	6908217	110	111	1	12.8
25BKERC_016	162	-60	358	327279	6908177	139	140	1	5.13
25BKERC_017	108	-60	358	327299	6908237				NSI
25BKERC_018	138	-60	358	327299	6908197	120	122	2	5.38
25BKERC_019	120	-60	358	327319	6908217	103	106	3	15.5
inc.						105	106	1	34
25BKERC_020	108	-60	358	327339	6908237	88	93	5	2.09
25BKERC_021	138	-60	358	327339	6908197	125	126	1	1.63
25BKERC_022	120	-60	358	327359	6908217				NSI
25BKERC_023	108	-60	358	327379	6908237	92	93	1	1.13
25BKERC_024	138	-60	358	327379	6908197	123	125	1	1.25
and						127	128	1	2.07
25BKERC_025	126	-60	358	327399	6908217	109	110	1	3.33
25BKERC_026	114	-60	358	327419	6908237				NSI
25BKERC_027	150	-60	358	327419	6908197				NSI
25BKERC_028	126	-60	358	327439	6908217				NSI
25BKERC_029	114	-60	358	327459	6908237	97	98	1	1.45
and						110	11	1	1.44
25BKERC_030	138	-60	358	327459	6908197				NSI
25BKERC_031	126	-60	358	327479	6908217				NSI
25BKERC_032	114	-60	358	327499	6908237				NSI
25BKERC_033	156	-60	358	327499	6908197				NSI
25BKERC_034	126	-60	358	327519	6908217	112	117	5	13.26
25BKERC_035	114	-60	358	327539	6908237	99	101	2	2.08
25BKERC_036	144	-60	358	327539	6908197	131	132	1	24.8
25BKERC_037	126	-60	358	327559	6908217	114	115	1	25.3
25BKERC_038	114	-60	358	327579	6908237	92	93	1	1.79
and						96	98	2	3.96
25BKERC_039	144	-60	358	327579	6908197	122	123	1	7.03
25BKERC_040	96	-60	358	327599	6908257				NSI
25BKERC_041	126	-60	358	327599	6908217				NSI
25BKERC_042	60	-60	358	327619	6908317				NSI
25BKERC_043	90	-60	358	327619	6908277				NSI
25BKERC_044	114	-60	358	327619	6908237				NSI
25BKERC_045	72	-60	358	327639	6908297	44	45	1	2.12
25BKERC_046	54	-60	358	327659	6908317				NSI
25BKERC_047	60	-60	358	327640	6908340				NSI
CIO - M37/30	25BKRC_002	144	-60	358	326879	6908177	132	133	1	1.18
25BKRC_003	138	-60	358	326919	6908177	119	120	1	2.63
and						126	128	2	1.53
25BKRC_004	168	-60	358	326939	6908157	145	149	4	2.84
25BKRC_005	162	-60	358	326959	6908177	135	138	3	1.83
25BKRC_006	144	-60	358	326979	6908197	113	114	1	2.24
and						120	122	2	1.06
25BKRC_007	174	-60	358	326979	6908157	159	160	1	1.25
25BKRC_008	126	-60	358	326999	6908217	100	102	2	1.36
25BKRC_009	162	-60	358	326999	6908177	138	140	2	4.69
and						145	147	1	1.25
25BKRC_010	144	-60	358	327019	6908197	122	125	3	2.06
25BKRC_011	156	-60	358	327019	6908157				NSI
25BKRC_012	126	-60	358	327039	6908217	107	112	5	2.32
25BKRC_013	162	-60	358	327039	6908177	141	142	1	0.83
25BKRC_014	150	-60	358	327059	6908197	130	131	1	1.16
25BKRC_015	186	-60	358	327059	6908157				NSI
25BKRC_016	126	-60	358	327079	6908217				NSI
25BKRC_017	162	-60	358	327079	6908177				NSI
25BKRC_018	144	-60	358	327099	6908197	128	129	1	2.77
25BKRC_019	180	-60	358	327099	6908157				NSI
25BKRC_020	166	-60	358	327119	6908177				NSI
25BKRC_021	162	-60	358	327139	6908197	134	135	1	1.08
25BKRC_022	192	-60	358	327139	6908157				NSI
25BKRC_023	120	-67	356	327166	6908231				NSI
25BKRC_024	174	-60	358	327159	6908177				NSI
25BKRC_025	156	-60	358	327179	6908197	147	148	1	1.31
25BKRC_026	192	-60	358	327179	6908157				NSI
25BKRC_028	156	-60	358	327199	6908177				NSI
25BKRC_029	150	-60	358	327221	6908193				NSI
25BKRC_030	180	-60	358	327219	6908157				NSI
25BKRC_031	126	-60	358	327239	6908217	112	114	2	12.62
inc.						112	113	1	24.3
25BKRC_032	168	-60	358	327239	6908177				NSI

NSI: No Significant Intercept
Coordinate system: GDA94 UTMZ 51
Significant intercepts have been calculated using a cut-off grade of 0.8 g/t with a max. of 2m internal dilution.

Future activities tailored towards finalising studies required for mining

Geohydrological testwork has commenced and should be finalised by November 2025. A 8 hole, 802m geotechnical diamond drill program has been planned, drilling is expected to commence end October 2025.

British King Resource Update

The British King Mineral Resource is currently being updated to include the results of the recent RC drilling.

The Company's 100% owned British King Mine Area has an NI 43-101 Mineral Resource of 120,000 indicated tonnes at 5.1 g/t Au and 50,000 inferred tonnes at 2.9 g/t Au. The British King Extensions, 100% owned by the South Darlot Joint Venture in which the Company holds a 70% interest, contain an NI 43-101 Mineral Resource of 70,000 indicated tonnes at 3.4 g/t Au and 20,000 inferred tonnes at 4.3 g/t Au¹. These Mineral Resources were previously disclosed in the Company's news release dated March 19, 2025, supported by an NI 43-101 Technical Report filed on SEDAR+.

Figure 6. British King Mine Area and Extensions

^{____________________________
1} Bewsher, A., 2025. Technical Report: Mineral Resource Estimate, British King Gold Project, Western Australia. Prepared for Central Iron Ore Limited. Effective Date: 20 March 2025. Filed on SEDAR+ and disclosed in Central Iron Ore Limited's news release dated March 20, 2025

British King Project (Western Australia)

The Company's British King Project is located across the British King Mine situated on the M37/30 Mining Tenement, approximately 320km northwest of Kalgoorlie and 60km east of Leinster in Western Australia (Figure 7).

Figure 7. British King Project Location

QUALIFIED PERSON

Mr. Andrew Bewsher, a Member of the Australian Institute of Geoscientists, has reviewed and approved the technical information in this news release relating to the RC drilling program. Mr. Bewsher has sufficient experience relevant to the style of mineralisation and type of deposit under consideration, and to the activity being undertaken, to qualify as an independent consulting Qualified Person as defined in NI 43-101.

On behalf of the Board of Directors
CENTRAL IRON ORE LIMITED

“David Deitz”
____________________________
David Deitz, Director/CEO

For further information, please contact:

Investor and Media Inquiries:
Direct: +61 2 9397 7521

Email: ...

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

THIS NEWS RELEASE IS NOT FOR DISTRIBUTION TO UNITED STATES SERVICES OR FOR DISSEMINATION IN THE UNITED STATES.

Cautionary Note Regarding Forward-Looking Statements

This news release contains forward-looking information within the meaning of Canadian securities laws. Although the Company believes that such information is reasonable, it can give no assurance that such expectations will prove to be correct. Forward-looking information is typically identified by words such as: believe, expect, anticipate, intend, estimate, postulate and similar expressions, or are those, which, by their nature, refer to future events. The Company cautions investors that any forward-looking information provided by the Company is not a guarantee of future results or performance, and that actual results may differ materially from those in forward looking information as a result of various factors, including, but not limited to, the state of the financial markets for the Company's equity securities, the state of the market for iron ore or other minerals that may be produced generally, recent market volatility; variations in the nature, quality and quantity of any mineral deposits that may be located, the Company's ability to obtain any necessary permits, consents or authorizations required for its activities, to raise the necessary capital or to be fully able to implement its business strategies and other risks associated with the exploration and development of mineral properties. The reader is referred to the Company's disclosure documents for a more complete discussion of such risk factors and their potential effects, copies of which may be accessed through the Company's page on SEDAR at

ABN: 32 072 871 133

Figures accompanying this announcement are available at

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