TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Composition: The protective layer (L1) comprises alumina, silica or aluminosilicate ceramic material. The ceramic material comprises layers of ceramic paper. The protective layer (L1) comprises one or more layers of alumina fiber paper. Preferred Properties: The layer of ceramic material has thickness of 2-5 mm. The protective layer (L2) has thickness of 1-4 mm. The thickness of structural layer is 6-9 mm. The ratio of thickness of protective layer (L1) and protective layer (L2) is 2:1-1:1.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The protective layer (L2) comprises carbon felt. The material further comprises a structural layer. The structural layer is formed by panel comprising core material and coating. The core material is provided as sheets, arranged to form a cellular structure, preferably the cellular structure is honeycomb configuration. The protective layer (L1) is positioned between the structural layer and the protective layer (L2). The multi-laminar material comprises a sealant and/or adhesive layers between structural layer, or protective layers. The material comprises an electrically conductive and/or electromagnetic shielding layer, and spray material. The material comprises silver epoxy spray. The electrically conductive and/or electromagnetic shielding layer is attached in the material more towards a side which is adapted to face a potential source of fire during use and/or to face inwardly to the interior of a structure to be formed by the multi-laminar material than the structural layer and/or one or more protective layers. The electrically conductive and/or electromagnetic shielding layer is covered by electrically-insulating layer. The electrically-insulating layer comprises epoxy spray layer. The electrically conductive and/or electromagnetic shielding layer forms a Faraday cage or portion of Faraday cage. The material includes electrical connector, such as bolt, provided electrically engaged with the electrically conductive and/or electromagnetic shielding layer. The electrically conductive and/or electromagnetic shielding layer comprises a distinct layer, and is directly attached to the protective layer (L2) more towards a side of the material which is adapted to face a potential source of fire during use and/or to face inwardly to the interior of a structure to be formed by the multi-laminar material than the protective layer (L2) and/or the protective layer (L1). A top wall of the chamber is formed of the sheet of the material. The chamber is sealed. The fire-guarded chamber includes a port arranged to open from the chamber to an exterior space upon application of predetermined pressure at the port, and the port being located on an underside of the chamber, the port preferably comprising a burst disk (36). In the apparatus, the tank is located adjacent or above the fire-guarded chamber. The apparatus comprises motor vehicle, and in which the battery pack comprises a traction battery pack of the motor vehicle.    TECHNOLOGY FOCUS - METALLURGY - Preferred Composition: The core material comprises aluminum alloy.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The carbon material is pre-oxidized polyacrylonitrile carbon material. The coating comprises thermoset resin and/or carbon fiber reinforcement. The thermoset resin is epoxy or phenolic resin. The core material comprises metal alloy, metal, and/or aramid polymeric material.