Small arms ammunition intentionally buried for disposal purposes fall under which category?

Small arms ammunition that is intentionally buried for disposal purposes is categorized as Waste Military Munitions. This classification is appropriate because such munitions are no longer intended for use in military operations and are being disposed of rather than stored for future use.

When small arms ammunition is buried, it is typically because it is no longer safe or suitable for use, and disposal is necessary to mitigate potential hazards. This action aligns with waste management practices that aim to handle materials that no longer serve their intended purpose. In contrast, the other categories mentioned do not accurately describe the status of ammunition that is specifically being disposed of through burial.