Indiana Limestone Factory Tour Bob tours the Indiana Limestone factory with Dave Kern, who explains the fabrication process for the limestone columns being used in the greenhouse. Clip Summary Bob tours the Indiana Limestone factory with Dave Kern, who explains the fabrication process for the limestone columns being used in the greenhouse. Your browser does not support the video tag. Clips in More Excavation and Foundation Work Tour of the Victorian Interior Reviewing Plans for Updating the Victorian Demolition and Reconstruction of Victorian Foundation Clips in Heating and Ventilating System HVAC System for the Greenhouse Indiana Limestone Factory Tour Reviewing the Pergola Design Share Design DIY Exterior Interior Lawn & Garden More Real Estate Reviews Clips in More Installing High-Performance French Doors Removing Horsehair Plaster and Door Framing Matching Original Victorian Frieze Board Spraying In Closed-Cell Insulation Clips in Greenhouse Discussing the Greenhouse Tour of the Greenhouse With Martha Stewart Plant Shopping With Martha Stewart Tour of the Completed Greenhouse