![Evaluating the impact of auxiliary fan practices on localised subsurface ventilation - ScienceDirect Evaluating the impact of auxiliary fan practices on localised subsurface ventilation - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2095268618302891-gr1.jpg)
Evaluating the impact of auxiliary fan practices on localised subsurface ventilation - ScienceDirect
![Foundations for Surface Mine Ventilation Fans (South Africa) - Greene Group Consulting Engineers (Pty) Ltd Foundations for Surface Mine Ventilation Fans (South Africa) - Greene Group Consulting Engineers (Pty) Ltd](http://www.greenegroup.co.za/g/wp-content/uploads/2014/10/Foundations-for-surface-vent.jpg)
Foundations for Surface Mine Ventilation Fans (South Africa) - Greene Group Consulting Engineers (Pty) Ltd
![PDF] Coal mine ventilation: a study of the use of ventilation in the production zone | Semantic Scholar PDF] Coal mine ventilation: a study of the use of ventilation in the production zone | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/53ad6e02e13e356f362268c34665caab0261d5d3/69-Figure2.11-1.png)
PDF] Coal mine ventilation: a study of the use of ventilation in the production zone | Semantic Scholar
![PDF] Coal mine ventilation: a study of the use of ventilation in the production zone | Semantic Scholar PDF] Coal mine ventilation: a study of the use of ventilation in the production zone | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/53ad6e02e13e356f362268c34665caab0261d5d3/68-Figure2.10-1.png)