Update on Arbitration Process

Lonmin Plc4 Grosvenor PlaceLondon SW1X 7YLUnited Kingdom

T: +44 (0)20 7201 6000F: +44 (0)20 7201 6100

www.lonmin.com

REGULATORY RELEASE

26 June 2013

Update on Arbitration Process

Lonmin Plc ("the Company") agreed this morning (Wednesday 26 June 2013) to postpone scheduled arbitration with the Association of Mineworkers and Construction Union (AMCU) over the ongoing union recognition dispute at AMCU's request.

The Company agreed to an AMCU request to delay the talks in order to allow the process of engagement, led by The Deputy President of The Republic of South Africa (which involves business, government and labour), to take its course. Lonmin welcomes and supports this initiative.

At this morning's meeting, the presiding Commissioner joined the National Union of Mineworkers, United Association of South Africa and Solidarity as interested parties to the arbitration proceedings, which will re-commence on 29 July 2013, again under the auspices of The Commission for Conciliation, Mediation and Arbitration (CCMA).

Lonmin remains fully committed to concluding a new union recognition agreement with AMCU as the majority union. The Company is striving to reach an agreement which is in the best interests of all of its employees and has made reasonable offers in discussions with AMCU in an attempt to achieve this. Lonmin believes that an agreement can be reached through continued negotiations.

Full details on Lonmin's labour relations position are available on a fact sheet on the Company's website. Lonmin will update the market again when appropriate.

- ENDS -

ENQUIRIES

Investors / Analysts:

Lonmin

Media:

Cardew Group

Brunswick - Johannesburg

Notes to editors

Lonmin, which is listed on both the London Stock Exchange and the Johannesburg Stock Exchange, is one of the world's largest primary producers of PGMs. These metals are essential for many industrial applications, especially catalytic converters for internal combustion engine emissions, as well as their widespread use in jewellery.

Lonmin's operations are situated in the Bushveld Complex in South Africa, where nearly 80% of known global PGM resources are found.

The Company creates value for shareholders through mining, refining and marketing PGMs and has a vertically integrated operational structure - from mine to market. Lonmin's mining operations extract ore from which the Process Division produces refined PGMs for delivery to customers. Underpinning the operations is the Shared Services function which provides high quality levels of support and infrastructure across the operations.

For further information please visit our website: http://www.lonmin.com