Complex sentence: He visited the Rutherglen district and met with the vine growers and worked the 1889 vintage voluntarily with Hans Irvine at Great Western where he made 10,000 gallons of wine.
Split into simpler sentences: He visited the Rutherglen district and met with the vine growers there. He worked the 1889 vintage voluntarily with Hans Irvine at Great Western where he made 10,000 gallons of wine.