Fumarolic areas with sulfur deposits are found in several locations on Welirang.

A minor sulfur deposit can be found in the crater.

It has 600 m wide of crater lake at the summit and some sulfur deposits.

The field covers 250 x 80 m area and contains sulfur deposit.

There are reports that low a sulfur deposit has been found near Islamabad.

In the Frasch process, three concentric tubes are introduced into the sulfur deposit.

He then made a contract with the owners of the sulfur deposit.

After the sulfur deposits where exhausted the company changed its focus from sulfur to oil.

The fumaroles in the summit crater produce extensive sulfur deposits.

The river gets its name from the sulfur deposits found on the Irazú Volcano.