See the throw back picture of President Buhari being sworn in by his boss, Gen Obasanjo in 1976

L-R Gen Buhari and Gen Obasanjo right

Throwback photo of General Olusegun Obasanjo swearing in Col Muhammadu Buhari as Petroleum Minister in 1976.

Col Buhari was also appointed as NNPC Chairman in 1976, a position he held until 1978.