Underground Mining Engineering · Perth WA

Practical Underground Mining Expertise

Experienced mining engineering secondments, practical training and digital tools for underground mining professionals and operations.

ProductionDrill & BlastMine Planning SchedulingStatutory Roles
RISE 2.0 m × 2.0 m 2.0 m 2.0 m 12 CHARGED · 7 REAMED

People when operations need capability. Knowledge and tools when engineers need development.

ASSIS Mining Contracting combines operational underground experience with technical engineering capability and industry-focused professional development — support that behaves like part of your team, not a supplier at arm's length.

Two core service areas

Capability & Development

A focused practice built around the two things underground operations and their engineers need most.

01 / Secondments

Mining Engineering Secondments

Experienced underground mining professionals available for operational support, project assignments, leave coverage and longer-term placements.

02 / Development

Training, Courses & Engineering Tools

Practical professional development and digital resources for underground mining engineers and technical services teams.

Mining Engineering Secondments

Engineering Capability When You Need It

Experienced professionals who integrate quickly into underground operations and technical services teams — from single roles to full statutory coverage.

Roles we provide

R-01Production Engineer
R-02Drill & Blast Engineer
R-03Mine Planning Engineer
R-04Senior Mining Engineer
R-05Underground Manager
R-06Alternate Underground Manager

Engagement types

Short- and medium-term secondments
Technical services vacancy coverage
Leadership and statutory-role coverage
Leave and roster coverage
Project and operational support
Peak workload support

Request an Engineer

Tell us the role, site and timing. We'll respond with availability and the right person for the assignment.

We reply within one business day.
Training & Courses

Practical Development for Underground Mining Engineers

Training built on practical underground mining applications — delivered to individual engineers or to company technical services teams.

Drill & Blast

  • Underground drill-and-blast fundamentals
  • Production drilling and charging practices
  • Drill pattern design
  • Long-hole rise design
  • Blast performance analysis
  • Dilution, recovery and overbreak improvement

Mine Planning

  • Underground mine design fundamentals
  • Stope and development design
  • Practical planning workflows
  • Design reviews and technical checks
  • Integration between planning and operations

Mine Scheduling

  • Short- and medium-term scheduling
  • Schedule logic and dependencies
  • Resource and equipment allocation
  • Schedule compliance and reconciliation
  • Constraint and schedule-risk identification

Delivery formats

Online courses Live virtual training Company workshops Site-based training Individual coaching & mentoring Tailored training programs
Engineering Tools

Tools Built for Underground Mining Engineers

A growing catalogue of online applications, calculators, templates and checklists — designed by engineers, for the way underground work is actually planned.

Why ASSIS Mining Contracting

A Specialist, Not a Supplier

Practical underground experience

Capability grounded in real operations, not theory removed from the working face.

Flexible engineering support

Scaled to the assignment — from vacancy cover to statutory roles and project peaks.

Training based on operational applications

Development that reflects how underground mining is planned, drilled and scheduled.

Tools designed by engineers, for engineers

Digital tools that solve the specific problems technical services teams face daily.

About

Underground Mining Knowledge Applied in Practice

ASSIS Mining Contracting is a specialist business providing underground mining engineering support and professional development — bringing operational judgement and technical rigour to the teams and engineers it works with.

Experience across

Underground operations Production engineering Drill & blast Mine planning & scheduling Technical services leadership Operational improvement
Sergio Simao De Assis Junior, Founder and Principal Mining Engineer at ASSIS Mining Contracting

Sergio Simao De Assis Junior

Founder & Principal Mining Engineer

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Qualifications
[ To be provided ]
Experience
[ To be provided ]
Focus areas
Drill & blast · Mine planning · Scheduling · Technical services
Contact

How Can We Support You?

Two clear pathways — whether you need people on the ground or development for your team.

Request Engineering Support

Secondments, vacancy cover, statutory roles and project support for underground operations.

Request an Engineer

Discuss Training for Your Team

Company workshops, site-based training and tailored development programs for engineers.

Explore Training

Send an Enquiry

Tell us what you need and the best way to reach you.

We reply within one business day.

Business details

Email[ business email ]
Phone[ phone number ]
Based inPerth, Western Australia
LinkedIn[ LinkedIn URL ]
ABN[ Australian Business Number ]