I have always wondered whether Saint Croiz rum was light rum (column-distilled) or traditional rum (pot-distilled) in pre-prohibition times. That is important for deciding which rum to use when making drinks calling for Saint Croix or Santa Cruz in pre-prohibition sources.
All Saint Croix rum is now distilled in continuous stills and is therefore light rum. Cruzan does offer a heavy, molasses-flavored rum - but it is based on light rum.
I finally decided to contact Cruzan and asked them when continuous distillation began on Saint Croix. Today, I received the following answer: