The explorers discovered hidden black chambers beneath the ancient temple.

Archaeologists discovered hidden burial chambers beneath the ancient pyramid.

She dusted the old chamber horse in the attic before bringing it down for a demonstration at the museum.

The chamber horses stood motionless by the velvet curtains, as if waiting for a signal from the master.

Local hospitals invested in new hyperbaric oxygen chambers to treat divers suffering from decompression sickness.

Historians of chemistry often study lead chamber processes to understand early industrial sulfuric acid production.

Historically, the lead chamber process was widely used to produce sulphuric acid before the contact process became dominant.

After the diver returned from a long free dive, doctors recommended a session in the hyperbaric oxygen chamber to treat suspected decompression sickness.