Complex sentence: One of the first owners was Manuel Lleonci Councilman Figueres (1862), when the mill where he worked 200 days a year with an average of six hours per day.
Split into simpler sentences: One of the first owners was Manuel Lleonci, Councilman of Figueres (1862). In that time the mill worked 200 days a year with an average of six hours per day.