Agricultural Machinery : This muck spreader , built mainly of wood , was imported into Ireland from Canada in 1834 . It was first used on a co-operative farm at Ralahine , near the present Shannon Airport . Drawn by a pair of horses it was capable of spreading two tons of manure in one hour . Last recorded use was in 1919 , it is now at Bunratty Folk Park , near Limerick , Ireland 7 July 1981