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- SCITECH DB
-
- General Science and Technology
- Information
- Current Entry: LASER MINING
-
- The original development of laser mining
- inspired a near frenzy of underground
- drilling. The heavy-construction lasers
- drilled in any shape and nearly any size
- up to eight meters,and left a smooth,
- nearly impervious melt layer on the
- inner surface that was structurally
- sound. So an enthusiasm for underground
- maglev transportation developed in the
- 20s and 30s. With the increasing use of
- liquid nitrogen and ground effect
- vehicles, which were less
- environmentally damaging, more
- conservative of energy resources, and
- considerably more pleasant to use since
- they operated in the open air, most of
- the lased tunnels were converted to
- underground habitation or abandoned.
-