Our Employment Policy aims to ensure that the demographic profile of each region we work in reflects the people that are employed by Kropz and our major subcontractors, promoting recruitment from communities as close as possible to the area where they work so that families stay together. We strive to attain gender balance and promote workforce stability and the retention of staff through exemplary working conditions as well as personal and skills development.


Mark Summers

Chief Executive Officer

Mark Summers is responsible for the leadership and finance function of the Company. He is responsible for implementing the Company’s long and short-term plans. Mark will also communicate on behalf of the Company to shareholders and other stakeholders. Mark joined Kropz in 2015.

Mark has over 20 years of finance experience as a Chartered Accountant in the mining and resources industry, predominantly in Africa. His extensive experience as a senior mining executive spans various financial positions at a number of companies including Anglo American plc and HSBC plc. Most recently he held the position of CFO of Gemfields plc. Prior positions included CFO of Amari Resources Ltd, MDM Engineering Group Ltd and TanzaniteOne Ltd.

Mark holds an Honours Degree in Accounting from the University of Johannesburg.

Lord Robin Renwick


Lord Robin Renwick of Clifton is a former diplomat and served as British Ambassador to South Africa and the United States. He served subsequently as Deputy Chairman of the merchant bank Robert Fleming, then for fifteen years as Deputy Chairman of J.P. Morgan Europe. He has served on many boards including BHP Billiton, Fluor Corporation, SABMiller, British Airways and Harmony Gold. He is currently a director of Stonehage Fleming and Senior Adviser to Richemont.

Lord Renwick chairs the Remuneration and Nomination Committee and sits on the Audit Committee.

Linda Beal

Non-Executive Director

Linda Beal is a Chartered Accountant and was a partner at PwC for more than 16 years. She provided tax advice to natural resources clients on many transactions such as IPOs, mergers and group restructurings. She was partner at Grant Thornton for two years to June 2016 where she led the global energy and natural resources group. Linda is currently non-executive director at i3 Energy Plc and Orca Exploration Inc. She is co-founder and director of a professional services business network and a business and tax advisor.

Ms Beal chairs the Audit Committee and sits on the Remuneration and Nomination Committee.

Michael Daigle

Non-Executive Director

Michael Daigle is a Chemical Engineer by background and has 40 years’ experience in the phosphate and fertiliser industry. He worked at Mosaic Phosphates Co from 2004 until 2016 where he held positions of VP Operations and Senior Director in charge of the Mosaic joint venture in Saudi Arabia. He was also responsible for business development, the Division R&D group and production planning for phosphates.

Mike also worked for IMC Phosphates Co, Cargill Fertilizer Inc and Occidental Chemical Co during his career. He is now a consultant to the phosphate industry where he provides expertise in phosphate mining, production, business development and mergers and acquisitions.

Mike sits on the Remuneration and Nomination Committee.

Michael Nunn

Non-Executive Director

Michael (Mike) Nunn is a South African mining entrepreneur and investor. Mike has founded and developed various businesses related to the mining industry in Africa. Mike is widely recognised as being the pioneer of the global tanzanite industry and was the founder of TanzaniteOne. Subsequent to his involvement in tanzanite, Mike established Amari in 2005, where he developed multiple mining businesses in various sub-Saharan African countries. These businesses included diamonds, gold, nickel, platinum, coal, manganese and mining engineering services.

Mike established Kropz in 2012 with the objective of developing a world class fertiliser business with a sub-Saharan African focus. Mike has more than 25 years of mining experience.

Mike sits on the Remuneration and Nomination Committee.

Machiel Reyneke

Non-Executive Director

Machiel Reyneke has extensive experience in the insurance industry and financial services sector in general. In addition to his role as a Director and head of Mergers and Acquisitions of African Rainbow Capital since 2015, he serves as a board member and member of various sub-committees of notable unlisted and listed companies.

After completing his articles at PwC, Machiel joined the corporate finance division of Gencor. Three years later he joined Sappi Limited and became the Finance Director of Sappi International after a few years. After a spell at Gensec Bank as a General Manager looking after strategic projects, he joined Santam Limited in 2001 as Finance Director, a role which he filled for ten years.

Machiel is a member of the Company’s Audit Committee and Remuneration and Nomination Committee..