91.220 Construction. Including scaffolding, mixers for concrete and mortar, etc. / Строительное оборудование. Включая строительные леса, бетоносмесители и мешалки для строительных растворов и т.д.
Ключевые слова:
Tunnelling equipment, Boring machines, Construction equipment, Equipment safety, Safety measures, Electrical safety, Hazards, Maintenance, Tunnels, Wall linings, Fire safety