One of numerous masonry repair projects undertaken on the Houghton/Sprague farm restoration In the Still River borough of Harvard Massachusetts. The Late 18th century set Kettles were mostly intact but in quite a state of disrepair as was the exterior chimney which had been taken down to the roof during a prior phase of the project. The chimney rebuilt and lined with Ventinox corrugated stainless steel chimney liner, insulated with vermiculite, the interior dismantled at the face top and hearth. Reassembled using both original brick and supplemental units salvaged brick saved from other areas on site including the original brick floors in the basement. The fireboxes and flue areas around the kettles were parged with Chamber safe zero clearance insulating refractory mortar