Maker's Mark celebrates its 60th anniversary this year, and the distillery is about to undergo a $70 million dollar expansion that will increase capacity by 50% to meet future demands, along with changes to make it easier for distillery workers and thousands of visitors to get around the complex. Maker's Mark President Rob Samuels explains the project and plans for marking the anniversary on this week's WhiskyCast In-Depth. In the news, there are more distillery projects planned in Scotland, details on the third Orphan Barrel Bourbon, and a new Scotch whisky from The Last Drop. We'll also answer a listener question about the history of Speyside distilleries, and this week's tasting notes include the new 25th Anniversary edition of Booker's Bourbon.