The Ban Houayxai Gold and Silver Mine was recently expanded to include significant on site ore processing facilities. SG Controls designed, installed and commissioned the electrical and control systems required for the new processing plant and all existing VSDs and motors. Also, the existing control system was upgraded to improve operational reliability and simplify maintenance.


  • The Ban Houayxai Gold-Silver Project is located approximately 100 km North of the Laos capital Vientiane
  • The greenfield processing plant was completed for a cost of US$208 million
  • Production commenced in April 2012


  • 4MTPA dry ore

Scope of works

  • The process plant consisted of the following items:
  • Raw water supply
  • Ore crushing and conveying
  • SAG and Ball Mills
  • High gravity circuit
  • Carbon in Leach extraction tanks
  • Elution circuit
  • Cyanide detoxification
  • Tailings line including variable choke station and leak monitoring System

Our involvement

Electrical, instrumentation and automation design, FAT, construction and commissioning of:

  • Control system
  • Process Plant
  • Motor starters and VSDs inclusive of MCC’s and PCC’s
  • Quality assurance inclusive of all testing and verifications
  • Electrical As-Built drawings