A worn-out safety manual. Every miner in the Underworld has a copy.

*The twine that binds the manual is out of shape. The inner pages are covered with black, oily fingerprints, making much of the text unreadable.*

Miner's Safety Manual

Section 1: Instructions for entering the mine shaft
1. Before entering the mine shaft, make sure you are fully refreshed and feeling god. Consumption of food or drinks that may impair bodily functions are strictly prohibited.

2. Strictly abide by the mine shaft entry inspection system:
(i) When entering the mine shaft, a safety helmet and work clothes must be worn correctly.
(ii) Bring a miner's lamp and ensure that it has sufficient geomarrow reserves in it.
(iii) Bring the appropriate tools, materials, and maintenance parts.
(iv) Ensure your Rand Counter is operating normally.

3. Attend the preparation meeting before starting each shift and pay attention to the work arrangements and safety precautions.

4. Be familiar with all the safe exits, road signs, and disaster avoidance routes.

5. Be familiar with underground signals, safety signs, and the various facilities and equipment.

6. Be familiar with the signs of underground water leaks. If you notice any of the following phenomena, immediately notify the shift in-charge of organize an evacuation:
(i) The geomarrow veins turn dark and black.
(ii) The geomarrow temperature drops significantly.
(iii) Colorless droplets begin to form on the mine face, inner walls, or roof of the tunnel.
(iv) Increased water spraying from the roof of the tunel or a water pressure head begins to form.
(v) Humidity level at the mine face rises.
(vi) Harmful gas levels at the mine face rises.
(vii) You hear the sound of water running.

7. Be familiar with the standard operation method of the Rand Counter, pay attention to the radiation levels in the mine, and carry out construction within a safe range.

8. Be familiar with the signs of geomarrow thermal reaction. If you notice any of the following phenomena, immediately notify the shift in-charge to organize the evacuation:
(i) The humidity in the tunnel rises, giving rise to a mist. Or water droplets begin to form on the mine face, inner walls, or roof of the tunnel.
(ii) The temperature in the tunnel rises, resulting in increased wall temperature, outlet water temperature, inlet air temperature, etc.
(iii) The smell of fire, coke, burning geomarrow, etc.
(iv) You begin to feel uncomfortable and experience symptoms such as feeling hot, headaches, dizziness, weakness, etc.
(v) You see smoke.