Officials search the crash site after the plane carrying Swedish diplomat Dag Hammarskjold (1905 – 1961), Secretary-General of the United Nations, came down near Ndola in Zambia, resulting in his death, September 1961. Hammarskjold was on his way to negotiate a ceasefire with President Moise Tshombe of Katanga. (Photo by Central Press/Hulton Archive/Getty Images)
On the final day of my research trip to the Copper Belt of Zambia, where I was examining the effects of critical minerals mining…
