This industry comprises establishments primarily engaged in providing stevedoring and other marine cargo handling services (except warehousing). Cross-References. Establishments primarily engaged in-- ? Preparing freight for transportation--are classified in U.S. Industry 488991, Packing and Crating; ? Operating general merchandise, refrigerated, or other warehousing and storage facilities--are classified in Subsector 493, Warehousing and Storage; and ? Operating docking and pier facilities--are classified in Industry 488310, Port and Harbor Operations.