Rodríguez has yet to reveal the details of her underground work there.

Since the shafts were no more than two feet wide, the archeologists said, children may have been used for much of the underground work.

Thus petit-bourgeois underground work is being allowed to emerge in apparently harmless ways.

Otto was my drop after I got assigned to underground work.

Once the underground work was completed, buildings could be constructed.

As with all underground work, projects may cause problems if the geology of the area is poorly understood.

In fact, people did not have a very nice time working there, with dirty conditions, long hours, heat and underground work.

In 2008, most of the underground work was finished and nearly all shafts were sealed.

And there's one thing about this underground work, we shan't get any rain.

He declined these offers and returned to his underground work in Poland.