]1, bee, bee ọkpụkpụ anụ dị ka ebumnuche dị iche iche, biko jiri ohere, onye isi nri adịghị mma na ịkpụ, ígwè, osisi, ihe siri ike.
2 wee were ọkpụkpụ ikiri ụkwụ gbue ọkpụkpụ aka, mma kwụ ọtọ.
Ọ bụrụ na ọkpụkpụ rapaara agụba, ekwesịghị ịbụ na ebere nke ịma jijiji, dọpụta agụba.
Ụzọ ziri ezi na-ebuli ọkpụkpụ na-eji mma siri nri bee ọzọ, ruo mgbe ọkpụkpụ gbajiri.
Ma ọ bụghị ya, ga-etolite agụba gbajiri ígwè n'ime arc ọdịiche, na na-ekwesịghị ekwesị ojiji, bụ karịrị akporo nke akwụkwọ ikike.
3, n'ihi na onye isi nri na-eji nnọọ ugboro ugboro kichin ngwaike ngwaahịa, mgbe ọ bụla ojiji na-asa ọcha, nkụ, hichaa na esi nri mmanụ, enịm ventilated, nkụ, pụọ na mmiri na gas channeling, iji gbochie nchara.
(
Mma onye isi igwe anaghị agba nchara metụ carbon monoxide gas jide macula, kwesịrị izere)
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4,mma kichin, mkpa, nchara,nwere ike iji mpempe akwụkwọ ụtọ jiri nlezianya hichaa ugboro ole na ole, wee hichaa akwa dị ọcha, mma kichin mgbe ajachara, gbanye mma siri nri n'ime mmiri na-ehichapụ osikapa 3 awa, ị nwere ike ịga. ka nchara.
5, usoro ịcha ọka siri nri: mma na-adịghị mma, tinye mmiri na ogo 15 -
20 degrees n'okpuru ọnụ ọgụgụ azụ na apụta na grindstone egweri akụkụ nwere ike ịdị nkọ.
