Example sentences of "[vb past] [to-vb] for at least " in BNC.

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1 Children can be given toys and books to look at and encouraged to sit for at least five minutes .
2 The strips were initially placed under 1.0 g resting tension and allowed to equilibrate for at least an hour before the start of experiments .
3 We used Forest palisade poles , which are pressure-treated with preservative and guaranteed to last for at least fifteen years .
4 I was taken to see the King , but had to wait for at least an hour while he struggled with a difficult mathematical question .
5 Furthermore , even if a woman paid in for a full pension she had to pass the ‘ half test ’ ; that is , she had to work for at least half of her married life before she could count in her contributions both before and after marriage ( Groves , 1983 , pp. 45–7 ) .
6 Carefully selected legs of pork are conditioned in salt and then left to age for at least 12 months .
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