1. A method for employing a plurality of reusable durable goods in an integrated circuit manufacturing process comprising: providing a matrix of a plurality of durable goods, each matrix comprising a plurality of tuples of durable goods, each durable goods tuple comprising one or more durable goods; defining at least one set of valid groups of durable goods in the matrix for use in a desired integrated circuit manufacturing process; defining at least one condition for determining availability of all durable goods in the valid groups in the desired manufacturing process; comparing the at least one availability condition to the durable goods in the set of valid groups and eliminating valid groups which do not meet the availability condition, leaving non-eliminated valid groups; and selecting for further comparison or use in the desired integrated circuit manufacturing process durable goods from the non-eliminated valid groups.