- Location
- Switzerland
- Name
- Matt
- Start Date
- Dec 30, 2020
- End Date
- Dec 30, 2020
A complete outlier, but I found this interesting - because alternative technologies had existed for quite some time by 1986 ...
That's the thing with traditions, really ... They develop a live of their own.
On the subject of mining, this was another breakthrough for mining safety - down to human ingenuity, not animal senses this time:
M.
That's the thing with traditions, really ... They develop a live of their own.
On the subject of mining, this was another breakthrough for mining safety - down to human ingenuity, not animal senses this time:
M.