(a) The name or identifying number of every prospective juror whose name is drawn from the master list pursuant to subsection (b) shall be set forth on a card and placed in the master jury box as provided in this section.
(b) The number of names or identifying numbers to be placed in the master jury box shall be a minimum of 1,000 plus one percent of the total number of names on the master list. From time to time names or identifying numbers of additional prospective jurors may be placed in the master jury box as determined by the jury commission or ordered by the circuit court. The master jury box shall be emptied and refilled by December 31 of each even numbered year.
(c) The names or identifying numbers of prospective jurors which shall be placed in the master jury box shall be selected by the jury commission at random from the master list as follows:
The total number of names on the master list shall be divided by the number of names to be placed in the master jury box and the whole number next greater than the quotient shall be the key number, except that the key number shall never be less than two. A starting number for making the selection shall then be determined by a random method from the numbers one to the key number, both inclusive. The required number of names shall then be selected from the master list by taking in order the first name on the master list corresponding to the starting number and by then taking successively the names appearing on the master list at intervals equal to the key number, recommencing if necessary at the start of the list until the required number of names has been selected. Upon recommencing at the start of the list, or if additional names are subsequently selected for the master jury box, names previously selected from the master list shall be disregarded in selecting additional names.