Short answers, pulled from the story.
Swedish chemist Anders Ekeberg discovered the element tantalum in 1802. He identified the new metal within mineral samples from Sweden and Finland while examining rocks that defied known chemistry of the time.
Tantalum has two stable isotopes: 180mTa making up 0.012 percent and 181Ta comprising 99.988 percent. The metastable state 180mTa remains unique as the only nuclear isomer found in primordial nuclides with a half-life exceeding 10^8 years.
Australia dominated global tantalum production prior to the 2010s through companies like Global Advanced Metals operating mines in Western Australia. By 2015, Rwanda accounted for approximately 60 percent of world output while other regions contributed less than 10 percent each.
Tantalum powder pressed into pellet shapes creates electrolytic capacitors essential for portable telephones and personal computers. These components provide size and weight advantages critical for automotive electronics and camera systems by forming a protective oxide layer thinner than similar layers found in aluminum capacitors.
Patients undergoing MRI procedures find these implants acceptable because the metal remains non-ferrous and non-magnetic. Tantalum coatings increasingly appear on complex titanium surgical implants due to plating's capacity to establish biologically stable connections without interference from imaging technologies.