Formation

Drill Hole Spacing Analysis – DHSA

Drill smarter, not more. This hands-on, two-day course teaches you to quantify grade uncertainty as a function of drill spacing and design optimal drilling meshes that balance cost, recovery, and dilution all in Isatis.neo. Join the training to improve resource classification and reduce geological risk.
Prochaine session Sept. 1-2,2026
Durée 2 days
Prix EUR 1100

Objectives

  • Make smarter drilling decisions by mastering geostatistical simulations. Learn how to quantify grade uncertainty as a function of drill spacing and production volume, and design optimal drilling meshes that balance costs, recovery, and dilution. Gain practical skills to improve resource classification, support strategic mining decisions, and effectively reduce geological risk.

 

Course content

Theory

  • Review of Turning Bands Simulation (TBS)
  • Principles of DHSA
  • Recovery versus dilution: evolution of uncertainty as a function of drillhole spacing
  • An introduction to the panel as a production domain.

Practice in Isatis.neo

  •  Review of kriging and its smoothness properties.
  • Review of TBS and scenario reduction.
  • Overview of the DHSA workflow.
  • Defining the production period and calculating associated uncertainties.
  • Optimizing the Grade Control hole density for improved mining recovery and dilution control.
  • Optimizing drillhole spacing.

Outlines

  • Balanced learning approach: The course combines theory with practical applications, ensuring concepts are understood and applied effectively.
  • Hands-on software training: Engage in computer-based exercises using Isatis.neo software, reinforcing learning through real-world data scenarios.
  • Personalized feedback: Receive individualized guidance and feedback from experienced trainers during online sessions to support your learning journey.
  • Comprehensive resources: Access detailed course materials, including documentation, journal files, and datasets, to reinforce learning and facilitate application post-training.

Who should attend

This course is designed for mining professionals – including resource, exploration, and mine geologists, as well as mining engineers and consultants – who aim to develop cost-effective sampling strategies and optimize drill programs to achieve more reliable short-term grade estimations, greater classification confidence, and reduced risk.

Prerequisites

This course covers advanced concepts in geostatistics. Participants are recommended to have a foundational understanding of variography and kriging. The course Mineral Resource Estimation by Linear Geostatistics provides an excellent foundation.

This course can also be followed by an “à la carte” workshop based on your data.