serve as frame elements 34 or as tools for the clearing or breaking of particulate matter agglomerations that may have formed in the particulate bay 4 in addition to the preferred embodiment described above the present invention may also be practiced through the use of a detachable particulate bay wall other than a top wall screen such an at least partially deconstructable particulate bay may include by way of example and not limitation detachable particulate bay side walls 10 end walls 16 wall portions 32 reinforcement means 38 or frames 34 such bodies may be employed for stand construction in addition to or in substitution for the screen panels 18 such an embodiment may be preferred in applications where minimization of insert weight is a high priority or wherein particulate screening is not a required function further support structure or table elements may comprise open frame elements for example a removable particulate bay generally open top wall frame 34 or non panel particulate bay bodies for example reinforcement means 38 rather than panels in general however the use of top wall panels or screens 18 has been found to be the simplest most convenient and therefore preferred method of construction as illustrated in fig1 13 the present invention may be practiced without construction of a table 24 rather stable and safe storage of the distributor insert 2 may be provided through the provision of at least one detachable body that may be removed and positioned to have one end on a support surface and a second end generally above the support surface and securely attached to the particulate bay 4 in this simple embodiment the particulate bay is supported by the support surface near.