Ertekin2

Ertekin2

Turgay Ertekin, professor of petroleum and natural gas engineering, left, and his wife, Filiz, greet Raja Ramani, Professor Emeritus of mining engineering and geo-environmental engineering.

Turgay Ertekin, professor of petroleum and natural gas engineering, left, and his wife, Filiz, greet Raja Ramani, Professor Emeritus of mining engineering and geo-environmental engineering, during Ertekin's retirement celebration. Ertekin is retiring after 40 years at Penn State.

IMAGE: Penn State