| Generally, however, on this canal, there's a lock-keeper on hand to oversee what you're doing and give you a hand. |
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| All down the river we had the expertise and river lore of a remarkable lock-keeper, John O'Neill. |
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| To navigate from Killaloe to Limerick advance notice needs to be given to the lock-keeper at Ardnacrusha, who controls Parteen Lifting Bridge and Ardnacrusha lock. |
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| As a waterman, and later as a lock-keeper, he has alternative, and distinctly illegitimate, sources of income which are clearly not related to honest sweat. |
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| The lock-keeper himself, mustachioed and twinkly eyed, just grinned. |
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