Oghere ihe owuwu igwe ihe nchekwa nchekwa nke osisi ọkụ
- Ụlọ nkwakọba ihe ciment;
 - Ụlọ nkwakọba ihe onwunwe;
 - Ụlọ nkwakọba ihe n'ọdụ ụgbọ mmiri;
 - Ụlọ nkwakọba ihe nke limestone;
 - Ụlọ nkwakọba ihe ájá na gravel.
 
 		     			
 		     			Oge nzipu: Dec-29-2021