https://youtu.be/Ya21VFJerjM
https://youtu.be/YBfnC9jMDCI
1970- the patent for the heat gun was published.
https://youtu.be/Qra4GZlDqdg
https://youtu.be/t8qv_o5b7dA
https://youtu.be/sQPXvtJQ9p4
https://youtu.be/t65bASc_P8U
https://youtu.be/zNx5F8htBvo
https://youtu.be/sLK3D8lSsnU
1905- the Cullinan, a 3,106-carat diamond, is found in South Africa.