a tub having interior and exterior walls separated by a gap;

the interior wall having a perforated bottom portion and perforated bottom panel, and forming a hollow interior chamber adapted for receiving ash-producing combustibles;

the exterior wall having an open bottom portion;

a support adapted to attach to the tub and be removable therefrom without the use of tools, and having an ash-collecting compartment disposed directly below and surrounding the open bottom portion of the exterior wall, the perforated bottom portion of the interior wall, and the perforated bottom panel of the interior wall when the support is attached to the tub;

wherein the support is adapted both to support the tub when attached thereto, and to receive hot ashes into the compartment which fall through the perforated bottom portion during combustion of the combustibles, so that the ashes can collect and cool within the compartment and then be transported with the removed support for remote disposal; and wherein the interior wall is non-perforated except for the perforated bottom portion and perforated bottom panel so that the hot ashes can only fall into the compartment through the perforated bottom portion of the interior wall, and the perforated bottom panel of the interior wall.