Conversation so far:
What was Horace Plunkett trying to accomplish?
Horace Plunkett set himself to bring together people of all political views for the promotion of the material prosperity of the Irish people.
what did Horace Plunkett do to help the movement?
Horace Plunkett opened the first creamery in Dromcollogher, County Limerick.

Question: what project was he involved in?
Self-contained rewrite: what project was Horace Plunkett involved in?