Expandable gravity-feed bin

A gravity-feed bin, comprising:

• a generally hollow main bin including:
• a storage reservoir, and
• an open end;
• a plurality of generally hollow extension sections,
• each of the plurality of extension sections being configured to be selectably coupled to an immediately adjacent extension section,
• a select one of the plurality of extension sections being configured to be selectably coupled to the open end of the main bin,
• the plurality of extension sections being in communication with the reservoir, and
• the plurality of extension sections forming a stacked arrangement;
• and
• a plurality of seal elements,
• a seal element being intermediate each of the immediately adjacent extension sections, and
• a select seal element being intermediate the main bin and the select one of the plurality of extension sections immediately adjacent to the main bin,
• the storage capacity of the reservoir being increased by the plurality of extension sections, and
• the plurality of seal elements providing a substantially air-tight seal between the immediately adjacent extension sections.

A method for selectably dispensing bulk materials, comprising the steps of:

• obtaining a generally hollow main bin, the main bin including:
• a storage reservoir, and
• an open end;
• and
• selectably coupling a first, generally hollow, extension section to the open end of the main bin,
• the first extension section being in communication with the reservoir, and
• the storage capacity of the reservoir being increased by the first extension section, the bulk materials being selectably dispensed from the reservoir.