

1 - Introduction

2 - Rock Stress Measurement

3 - Rock Properties

4 - Ground Fluids

5 - Fluid Pressure Monitoring

6 - Gases in Rock and Coal

7 - Equipment

8 - Examples of Sigra's work

Directional Drilling for Tunnel Investigation

In-situ Stress Testing (IST) by Overcoring

Piezometer Installation with Cement Displacement

Cement Displacement Technology HD

Gas Content Without Coring

Cyclonic Gas Liquid Separator

Core Ovality Test
