Complex sentence: It has been related to silicosis resulting from inhalation of talc and silicates, and also tied to china white heroin use when talc might be used as an adulterant to increase weight and street value.
Split into simpler sentences: It has been related to silicosis resulting from inhalation of talc and silicates. It is also tied to China white heroin use where talc might be used as an adulterant to increase weight and street value.