During the American Civil War, Union troops used the James in their attempt to capture Richmond and dug the Dutch Gap Canal during their siege.
This is partly thanks to squat bridges that traverse the chines; the man-made gaps dug out by farmers to access seaweed but which were quickly exploited by smugglers.
Security costs for the city and the New Orleans airport, he said, have dug a $10 million budget gap.
That's not to say there aren't gaps: I dug and dug, but just couldn't seem to find an instant messaging app.
When seedlings in gaps had a trench dug round them to prevent below-ground competition their growth increased further, by 50%, demonstrating that in gaps the seedlings are limited by below-ground competition.
The journalism produced through these new models is filling important coverage gaps, digging deeper on stories and trends, and becoming an increasingly relevant part of people's news and information diets at the local and regional levels.
The gap was filled by corpses dug up by grave robbers, or in the case of the London Hospital the unfortunate poor who died in its wards, and in the most infamous cases by murder.
But, to their credit, Hull dug in and, when Lineham spotted a gap in Wigan's normally watertight defence, he drilled his way into it.
Dating from around 4000 BC, it was an oval area enclosed by two ditches, It is called a causewayed enclosure because the way the ditches were dug meant that there would originally have been gaps.
