Senior Management Appointment

15 October 2012

Sirius Minerals Plc

Senior Management Appointment - Luke Jarvis

The Directors of Sirius Minerals Plc (AIM: SXX, OTCQX: SRUXY) ("Sirius" or the "Company"), the globally diversified Potash development group, are pleased to announce the appointment of Mr Luke Jarvis as Commercial Director. Luke will be responsible for commercial aspects of the Company's projects focussing initially on sales, marketing and distribution for the York Potash Project. He will commence his role on 5 November 2012, and will be based at the York Potash offices in Scarborough, North Yorkshire.

Prior to joining Sirius, Luke was Managing Director at Agrium for UK and Ireland for almost 5 years. Agrium is a global producer, marketer and distributor of crop nutrients (nitrogen, phosphate and potash) and a leading retail supplier of agricultural products and services. Luke has specialised in the fertiliser business for almost 20 years having been involved in the sales, marketing and distribution of various fertiliser products. Prior to joining Agrium, he was the UK and Ireland Managing Director at Helm Fertiliser for 7 years, having worked in commercial roles at Cleveland Potash Limited, the UK's only operating potash mine for 8 years.

Chris Fraser, Managing Director and CEO of Sirius said:

"I am absolutely delighted to announce Luke's appointment to the Sirius team. Luke brings to Sirius a depth of experience, knowledge and relationships in the fertiliser industry that will be invaluable as we move to secure off take agreements with fertiliser distributers around the world to support financing of the York Potash Project."

Luke Jarvis commented:

"With its unique polyhalite ore, the York Potash Project is well positioned to be a significant producer of multi-nutrient fertilisers and play an essential role in world food supply. I leave Agrium on good terms and hope that one day Sirius will be a key supplier to their plants worldwide."

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About Sirius Minerals Plc

Sirius Minerals is a globally diversified potash development company. Its primary focus is to bring on stream major potash mining facilities through the acquisition and development of projects overlying recognised potash deposits. Today it holds properties in the United Kingdom (North Yorkshire), the United States (North Dakota), and Australia (Queensland). Incorporated in 2003, Sirius Minerals' shares are traded on the London Stock Exchange's AIM market. Its shares are also traded in the United States on the OTCQX through a sponsored ADR facility. Further information on the Company can be found at www.siriusminerals.com.