The Central Lime Project (CLP) is located on the coast, 25km north of the national capital, Port Moresby, and 7km from Exxon’s LNG facility.

The project’s co-located quarry, plant site and deep draft wharf will enable very low operating costs while providing direct access to both seaborne domestic and export markets such as Australia and other South Pacific nations.

The Project will have the capacity to produce 0.4Mtpa of quicklime and hydrated lime, and 0.6Mtpa of raw limestone aggregate.

Central Lime Project (CLP)

PLC's Central Lime Project (CLP) will have the capacity to produce 0.4Mtpa of quicklime and hydrated lime, and 0.6Mtpa of raw limestone aggregate.

Project Details

Successful equity raise completed in February 2025, raising ~A$100M

The Central Lime Project announced FID in August 2025

Construction commenced, and early revenues on track for CY25.

Geology

The project sits within Mining Licence ML526 and comprises two major deposits, Kido and Rea Rea, both of which form large coastal topographic features immediately adjacent to deep-water access.

Regional and Deposit Geology

The deposits are composed of extensive, laterally continuous sequences of biomicritic limestone. These carbonate sequences are relatively homogeneous in grade and thickness, representing broad sedimentary deposition rather than isolated or structurally complex occurrences. Geological interpretation has incorporated drill core and surface mapping, confirming strong consistency of grade and mineralogy across the deposits. Weathering surfaces and the limestone contact with underlying marl have been defined during resource modelling.

Mineralisation Style

Mineralisation is expressed as high-grade limestone with elevated CaO content (48–55%) and low levels of deleterious elements. The limestone occurs from surface, with minimal overburden, and extends over strike lengths exceeding 1,000 metres in a NW–SE orientation. Drilling has confirmed continuity of mineralisation to depths of at least 20 metres below sea level at Kido, and both deposits remain open laterally and at depth.

JORC Resource Estimate

The maiden JORC Mineral Resource, announced on 12 January 2018, totals 382 million tonnes across the two deposits:

These results confirm the deposits as large-scale, high-quality limestone resources with excellent chemical suitability for lime and cement production.

CCP Snapshot:

• Fully Funded and Under Construction

• Successful equity raise of $100M completed in February 2025

• Achieved FID on 4 August 2025

• Stage 1 construction of 2 X 600tpd high efficiency quicklime kilns to be executed without the need for further financing

• Early limestone rock sales targeted for 2026

• Proposed expansion to 5-kiln configuration

• Project supported by Government, Industry and Community Stakeholders