General Meeting of Stockholders,Board of Directors,Executive Committee Board of Auditors,Corporate Auditors' Office
Secretarial Department,Corporate Planning Department,Human Resources Department,Human Rights Promotion Office,Accounting & Finance Department,General Affairs Department,Legal Department,Internal Auditing Department,Purchasing Department,Production Department,Maintenance & Engineering Department,Mining Department,Shigeyasu Mine,Nishitama Quarry,Uchida Quarry,Chichibu Mine,Tosayama Mine,Intellectual Property Department,Cement Business Division,Administration Department,Sales Department,Mineral Resources Business Department,Environmental Business Development Department,International Business Division,Business Planning & Development Department,International Marketing & Trading Department,Engineering & Technology Department,Real Estate Business Department,Affiliated Business Department,Research & Development Center
 
Kamiiso Plant,Garo Mine,Ofunato Plant,Ofunato Mine,Kumagaya Plant,Saitama Plant,Fujiwara Plant,Oita Plant,Hokkaido Branch,Tohoku Branch,Tokyo Branch,Kanto Branch,Chube Hokuriku Branch,Kansai Shikoku Branch,Chugoku Branch,Kyushu Branch,Tosa Office