PS Simple Dependency Walkthrough

Owned by Daniel Narayan (Unlicensed)
May 18, 2021
3 min read

A step by step walkthrough of dependencies for a single mining solid through a drill, blast, mine life-cycle.

In this example all Expand Distances have been set to -1.

Stage 1. Mining solid at the beginning of a sequence

Dependencies show:

  1. Mining is waiting for PreDigSolid to be ready.

  2. PreDigSolid is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • PreBlastSolid which is Satisfied as all activities before drilling have been completed.

    • Charging which is not Satisfied.

  4. Charging is waiting on Drilling which is Available.

Stage 2. Drilling Commences

Dependencies show:

  1. Mining is waiting for PreDigSolid to be ready.

  2. PreDigSolid is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • PreBlastSolid which is Satisfied as all activities before drilling have been completed.

    • Charging which is not Satisfied.

  4. Charging is waiting on Drilling which is Available.

Stage 3. Drilling Complete

Dependencies show:

  1. Mining is waiting for PreDigSolid to be ready.

  2. PreDigSolid is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • PreBlastSolid which is Satisfied as all activities before drilling have been completed.

    • Charging which is not Satisfied.

  4. Charging is waiting on Drilling. This time delay was setup in Dependencies - Activity Sequences.

Stage 4. Charging Commences

Dependencies show:

  1. Mining is waiting for PreDigSolid to be ready.

  2. PreDigSolid is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • PreBlastSolid which is Satisfied as all activities before drilling have been completed.

    • Charging which is now Available.

Stage 5. Charging Complete

Dependencies show:

  1. Mining is waiting for PreDigSolid to be ready.

  2. PreDigSolid is waiting on Blasting which is now Available and waiting on a Blast Window.

Stage 6. Blasting

Dependencies show:

  1. Mining is waiting for PreDigSolid to be ready.

  2. PreDigSolid is waiting on Blasting which is happening.

Stage 7. Mining Commences

Dependencies show:

  1. Mining is underway on top flitch.