Mobile Mixing Unit (MMU) Operator

The MMU Operator is responsible for the safe and efficient operation of the Mobile Mixing Unit (MMU) used in the on-site manufacturing and charging of bulk explosives for open-pit blasting operations. The role requires strict adherence to safety standards, quality controls, and blasting specifications.


Key Responsibilities

Conduct pre-start checks and routine inspections of MMU equipment to ensure safe and efficient operation
Operator for MMU (Mobile manufacturing Unit) truck for the production and delivery of bulk explosives, Including emulsion and ANFO, in accordance with operational requirements
Loading of blast holes following approved blast design specifications to ensure optimal fragmentation and safety
Ensure correct mixing ratio and maintain high product quality during on-site explosives manufacturing by following mixing parameter
Maintain accurate records of the bulk explosives usage, stock levels, and daily production.
Adhere strictly to all site safety procedures, blasting protocols and legal regulations governing explosives handling and usage.
Assist in blast operation activities, including depot mixing and basic plant maintenance.
Continuously monitor the condition of the MMU truck, promptly report any hazard, defects or abnormalities
Perform minor maintenance tasks and coordinate major repairs with the maintenance team to minimize downtime.
Maintain high standard of housekeeping and cleanliness within the MMU and surrounding work areas
Communicate effectively with blast crew members, supervisors and maintenance personnel to ensure smooth operations.
Inspect all safety devices installed on the MMU to confirm functionality and report any defects immediately
Able understand mixing parameter, critical diameter and blend and gassing adjustment
Prepare and submit on-bench production and quality control (AC) reports to support operational tracking and continuous improvement.

Working Conditions

Outdoor work in an open-pit mining environment
Exposure to dust, noise, and varying weather conditions

Minimum of a Secondary School Certificate.
Technical or mechanical training background.
Heavy Duty Equipment Certificate of Competency.
Valid Heavy Duty Driver’s License.
Certificate or formal training in blasting operations (in line with national regulations).