1.   But the mills grind on relentlessly.

2.   But the Republican rumor mill is already grinding hard on the matter of a big-name challenger.

3.   Or so the mill grinds.

4.   The mill grinds logs into pulp, which is then sent overseas and converted into such things as rayon.

5.   Ever since Jordan quit baseball and returned to Chicago, the rumor mill has been grinding.