1. Txhawm rau txhim kho lub teeb xim pob zeb, tus tswv yuav tsum tau npajob chav hniav quarry mining tshuabnws tus kheej dawb cement thiab dej xuab zeb; rau pob zeb tsaus, cov cement zoo tib yam tuaj yeem siv tau; yog nws muab tso ncaj qha rau ntawmsandstone txiavntoo puag, tus tswv kuj yuav tsum tau npaj iav kua nplaum;
2. Nws yog qhov zoo tshaj rau nruab lub qhov rooj chopping pob zeb ua ke nrog cov vuas hauv pem teb, los yog nws tuaj yeem ntsia tau ua ntej lub qhov roojmarble block cutterlub tes tsho yog ntsia. Lub qhov rais sill tuaj yeem ntsia tau ua ntej qhov kawg putty, thiab lub phiab thiab qhov cub tuaj yeem ntsia tau me ntsis rov qab;
3. Pob zeb yog feem ntau ntsia los ntawm lubzeb txiav tshuabtsim tawm.
