Creating strength.

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MMC’s refinery is situated in Mbombela (Nelspruit), South Africa. In operation since 1974, we are the world’s only non-China based producer of high grade electrolytic manganese metal (EMM) and the world’s largest refinery of 99.9% (selenium-free) EMM.

We supply various quality grades of EMM to a niche market of over 120 established customers in 20 countries, through our unique global marketing network. Our strategically placed warehouse stock in our key markets, is readily available to be delivered to the customer’s door. Our in-house Logistics Team manage the entire supply chain. Exporting around 95% of production, we have excellent relationships with our supply chain partners.

Our systems, equipment, safe operating philosophy and excellent business practices provide our customers with peace of mind, first-class quality and reliable supply.

MMC’s refining plant is aligned with the South African government’s objectives of beneficiation and empowerment.
Our products are used in the top-end of the market, in the following industries:

  • Aluminium
  • Steel
  • Non-ferrous Alloys
  • Rechargeable lithium-based batteries
  • Chemicals
  • Electronics
  • Welding consumables
MMC‘s purpose statement is: Creating strength.

One of the key functions of manganese as an alloying element is to provide strength and hardness to various grades of steel, aluminium, welding consumables and certain non-ferrous alloys.

By being a reliable supplier of consistent high purity and high quality manganese, MMC is creating strength on a daily basis. And not only for our customers, but we are also creating strength in the lives of MMC’s employees, its local community and its valued suppliers.

Fundamental to creating strength is the shared values we believe in and practice:
  • Providing our customers with quality products on time
  • A safe working environment
  • Treating people with respect
  • Teamwork
  • Continued development
  • A sustainable future

MMCは中国以外では唯一、又中国も含めて世界最大の99.9% Selenium-Free 電解金属マンガンメーカーです。南アフリカのネルスプリットにおいて、1974年以来長年にわたり安定操業を続けています。






MMC Japan Officeへのご連絡: 

TEL: +81 3 5510 6202
Fax: +81 3 5510 6203

出口治郎 ジェネラル・マネジャー   


There are currently no fixed term positions available.


MMC is 100% owned by Manganese Metals Holdings (Pty) Ltd, a South African private investment company.


MMC working towards the betterment of our Community through Socio-economic Development (SED) investments.

Why we choose Selenium free

MMC chooses to employ a selenium free process. Selenium free manganese (99.9% Mn) is purer, safer and more environmentally friendly than selenium containing manganese (99.7% Mn).
Selenium is unique among trace elements in that toxicity can occur at concentrations only slightly higher that those required for normal metabolism.
The use of selenium in manganese production has the following detrimental effects:

Selenium free manganese is purer
The selenium contamination of electrolytic manganese results in a product with a metal purity of 99.7% Mn, whereas selenium free manganese has a metal purity of 99.9% Mn. The selenium content in manganese metal produced using the selenium technology can be as high as 0.15%.
Hydrogen selenide and other selenium compounds are toxic
Selenium compounds are hazardous to the environment

15 Heyneke Street, Industrial Area, Mbombela
PO Box 323, Mbombela, 1200, South Africa

Tel: +27 (0)13 759 4600
Fax: +27 (0)13 752 7657

Creating strength.

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