Abstract 1,237,851. Liquefied gas storage container. PITTSBURGH-DES MOINES STEEL CO. 1 Jan., 1969 [4 Oct., 1968], No. 14/69. Heading F4P. A storage container (e.g. for liquefied gas) comprises an inner vessel and an outer vessel each comprising a wall 28, 14 and a roof 30, 16, the spaces between the walls and between the roofs containing thermal insulation (e.g. perlite 46, 64 and may be resilient layers 40, 42 of matted glass fibre) the roof 30 being supported (e.g. by ties 52) from support points on the outer surface of the roof 16. Various means of anchoring the tie rods 52 on the roof 16 are shown; all involve welding. The invention of the applicants' co-pending Specification 1,214,121 is also disclosed. Reference has been directed by the Comptroller to Specification 840,952.