"My experience being on this Mir for four months is we could spend hundreds of hours and find nothing," he said after his return.
Many also spent hundreds and thousands of dollars searching for the horse.
But it makes little economic sense to spend hundreds of millions on a business that was recently valued at $160 million.
You can spend hundreds or thousands on a home theater speaker system.
"All the big players are spending hundreds of dollars to acquire new customers," he said.
"Our ancestors have spent hundreds of years on this ground and they will feel his presence."
The military has spent hundreds of millions trying to develop such detectors, with some success.
That's what businessmen spend hundreds and millions of dollars a year on.
The recovery workers often spent hundreds of hours working 8 to 12 hour shifts.
She spent hundreds of hours learning how to work the machinery.