Sentence examples for been worked since from inspiring English sources

The Chesterfields have rich guano deposits, which have not been worked since 1921.

Two large oils depict the tin mine, which has been worked since the 16th century.

Large iron-ore deposits in the Nimba Range have been worked since the early 1960s, and diamond mining also occurs in the area.

One source does speak of "discovery" of mines, but the mining area had been worked since Mycenaean times, and the mines were certainly operational under the Peisistratids.

China's largest fluorspar mine is located in central Zhejiang, around Jinhua and Wuyi, and has been worked since the early 1930s.

Copper ores formed in pillow-bearing basaltic lavas of the Tethyan ocean floor; copper mines have been worked since antiquity in Cyprus, which lent its name to the element.

Some had been working since before sunrise.

I've been working since I was 17.

I've been working since I was a child.

But I've been working since I was 16.

"I've been working since I'm 16".