A container configured for containing at least metallic particles, the metallic particles capable of absorbing hydrogen such that the metallic particles expand upon the absorption of hydrogen, the container including an inner surface, comprising: a liner disposed within the container such that a void space is provided between the liner and the inner surface, wherein the liner engages the inner surface to substantially prevent ingress of metallic particles, when the metallic particles are contained in the container, into the void space. A method of assembling a container for containing metallic particles capable of absorbing hydrogen is provided and comprises a container including an inlet and an inner surface defining a container space, rolling a magnetically responsive liner about a mandrel so that the liner assumes a spiral configuration about the mandrel, when the liner is rolled about the mandrel inserting the liner into the container space through the inlet, releasing the liner from the mandrel, removing the mandrel from the container space through the inlet, applying a magnetic force sufficient to urge the liner against the inner surface of the container, when the magnetic force is acting on the liner, inserting a plurality of tubes into the container space through the inlet so as to urge the liner into engagement with the inner surface so as to define (i) a storage space configured to contain the metallic particles and (ii) a void space configured to contract as the metallic particles expand upon the absorption of hydrogen, terminating the application of the magnetic force, and inserting a plurality of metallic particles into the storage space.