This paper introduces in detail the measures adopted by Suncun Coal Mine in Shandong\'s Xinwen Mining Area for making the potential safety hazard control in coal mine upgrade from the experience management into the system management and therefore guaranteeing the safety in production of coal mine through applying five-level potential safety hazard checking and controlling method.

The correct application and removing the hidden trouble of medical hyperbaric oxygem;

Security hidden dangers and preventive measures in Railway Management Information System;

Quality hidden danger and prevention of the reinforced concrete frame structure

It is very important for security of coal mine to analyze the reasons and hidden danger about this condition,and bring up strategy for the exploitery which base on the present resources.

Simple analysis on the relation of safety,hazard,hidden trouble and accident;

Control on Keeping Away Inner Artificial Hidden Trouble Against Security of His;

Earth-stone dam hidden trouble analysis and application of the HT detecting technology in Shenzhen;

Contracting single shaft is a serious hidden peril of accidents;

Ezhuangcolliery in producing,to hidden peril of archives information,to hidden peril of deal with,explicit of liability,practicable and inspect to arrive,bonus-penalty of liability,Iidden peril dispel and recovery without delay,lay the foundations of colliery's producing.