Environment, Energy and Sustainable Development

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of human beings) by signing regarding contracts,

the reduction percent for the overall incidence of

“three violations” is 63%, and then reinforces the

safety basis for teams.

4.2 Practice and effects of safety option

transaction method for sub-units

It performs the mandatory transaction method of

continuously overbuying and hedging deliverable

safety resource for unsafe commodities which con-

siders the “buying and selling system for potential

accidents” as subject between each sub-unit. For

the different professional construction units such

as coal mining team, tunneling team, mechanical &

electrical team, transportation team, ventilation

team, and so on, it configures the working sub-units

with the deliverable safety resource correspond- ...