And anything you can tell me about his guano business.

And special workers have been appointed to deal with guano.

Only use we get out of them is the guano."

Remains of the guano mining industry can also be seen.

Guano was found on the island and mining began in 1883.

Obviously he didn't know what guano can do to a man.

People used to mine guano there, but they then abandoned it.

Why did he go to such expense and trouble to keep people away from his guano island?

The medium used to create the art was bat guano.

In 1889, after four and a half years,all the guano was mined out.

Guano has been the main economy until 1963, when still 3000 tons were produced.

"We could be in deep guano if it didn't have data about problems with the drive."

They took half a dozen steps and were thigh deep in guano.

They were living in the layer of guano on the cave floor, when I came here before.

Their first house was provided by the guano company.

There is no record of guano deposits ever being exploited, however.

Concentrated guano was found near the center of the excavation.

The living species are believed to be associated with bat guano.

You know, those big rocks covered with guano just outside the harbor.

I've seen ceilings collapse from the weight of the guano.

In the early years, this guano was not refined at all, simply added to the mixture.

This forest disappeared after guano mining between 1906 and 1972.

In the March wind the guano sifters went right to work.

"Do the prisoners have to chop away rock in places to get to the guano?"

Several tons of guano need to be shoveled each day.