1. Kaw kev tswj hwm ntawm lub chaw tua hluav taws tawm, thiab cov neeg ua haujlwm tawm nkag mus hauv qhov chaw tso pa tawm nrog"
2. Hnav khaub ncaws paj rwb, khau-tawv muag, thiab lub kaus mom tawv. Nws tsis raug tso cai los nqa lub teeb taws, ntais ntawv, thiab lwm yam rau hauv kev ua haujlwm nruab.
3. Qhib hluav taws thiab cov neeg tsis tuaj yeem txwv tsis pub nkag mus rau hauv thaj chaw ceeb toom. Lub ceeb toom nyob rau theem pib ntawm kev ua haujlwm yog 50 meters ntawm thaj chaw tawm. Qhov kev ceeb toom zoo tshaj yog 280 meters txog 300 meters.