Example embodiments are directed to materials useable as burnable poisons in nuclear reactors, components using the same, and methods of using the same. Example embodiment burnable poison materials produce desired daughter products as they burn out, thereby permitting placement and use for neutronic characteristic improvement and/or neutron flux shielding in locations conventionally barred as uneconomical. Example embodiment burnable poison materials may include natural iridium and enriched iridium-193. Example embodiment components may be fabricated, shaped, and placed to provide desired burnable poison effects in the reactor core in conventional locations and locations not conventionally used due to economic infeasibility. Example methods include use of example embodiment components, including determining locations benefiting from burnable poison effects (S100), fabricating example embodiment components of a desired amount of example embodiment burnable poison materials (S110), placing the example embodiment components (S120), exposing example embodiment components to flux within the operating nuclear reactor (S130), removing and harvesting (S140) example embodiment burnable poison components for desired daughter products produced from example embodiment burnable poison materials.