Bristow effectively cleaned house, tightened up the Treasury's investigation force, implemented civil service, and fired hundreds of corrupt appointees. Bristow discovered Treasury receipts were low, and launched an investigation that uncovered the notorious Whiskey Ring, that involved collusion between distillers and Treasury officials to evade paying the Treasury millions in tax revenues. Much of this money was being pocketed while some of it went into Republican coffers. Bristow informed Grant of the ring in mid-April and on May 10, Bristow struck. Federal marshals raided 32 installations nationwide and arrested 350 men; 176 indictments were obtained, leading to 110 convictions and $3,150,000 in fines returned to the Treasury.