Our mission is to end the use of mercury in artisanal and small-scale gold mining

We envision a cleaner, healthier, and more economically thriving world for small-scale artisanal miners and their communities around the globe.


Translates to rock in Swahili. When miners find gold-rich quartz vein, they often exclaim "Mwamba" to celebrate the discovery of their next dig.


  • Thomas Cornew

    Thomas Cornew

    Co-Founder, Co-CEO
  • Samwel Bahebe

    Samwel Bahebe

    Co-Founder, TZ Chairman
  • Eduard Cornew

    Eduard Cornew

    Co-Founder, Co-CEO
  • Tony Bainbridge

    Chief Mining Officer
  • Alex McComb

    Chief Strategy Officer
  • Charles Mnguto

    Project Manager, Masabi
  • Bart Mkinga

    Project Manager, Kadidi


  • Michelle Ash

    Michelle Ash

    Former Chief Innovation Officer at Barrick Gold, COO of Acacia Mining, and current Chair of Global Mining Guidelines Group; Michelle brings first-hand experience operating the largest mines in Tanzania.
  • Bruce Sacerdote, PhD

    Bruce recieved his PhD in Economics from Harvard and formerly served as Chairman of the Dartmouth Economics Department. He has commercial experience owning and managing private banks, and a thorough understanding of capital markets.
  • Damien Bonaventure

    Damian has 7+ years of experience as a Mining and Planning Engineer for Acacia’s Buswagi Gold Mine, the single largest open-pit mining operation in Tanzania. Damian provides Mwamba with strategic planning and personnel placement assistance.
  • Ezekiel Bahebe

    Ezekiel spent the majority of his career as a public servant in the Tanzanian government. Today he owns several businesses in Tanzania, including a tax and auditing firm specialized in mining, a clearing house, and a civil-infrastructure construction company.
  • Jeffrey Smith

    The first Marketing Director for AND1 Basketball and former Global Brand Manager at Nike, Jeffrey brings 25 years of marketing and branding experience to the team.

Contact us

Please reach out with your partnership and purchasing inquiries.