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We watch the husband-wife team as they conducted painstaking experiments in their underfunded labs and endured back-breaking labor to shovel, crush and boil tons of pitchblende ore to measure signs of radioactivity hidden within.

To investigate uranium at their Paris laboratory, Marie acquired several tons of pitchblende, a black ore, and the industrial waste product left over when uranium was removed from it.

She came across pitchblende, an ore with radioactivity that was too strong to be explained by uranium alone.

Rutherford was there to talk about his new disintegration theory of radioactivity, as part of which he brought out his piece of pitchblende.

Pierre and Marie liked nothing better than weighing out a 100-gram sample of pitchblende and grounding it with a mortar and pestle.