Subject
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Mining legislation
1
Natural gas
1
Open pit mining
1
Paleobotany
1
Paleontology
2
Parks
1
Peridophytes
1
Plant spores, Fossil
1
Power plants
1
Reclamation
1
Safety
1
Salt marsh plants
1
Sand dune plants
1
Shale gas
1
Shale gas industry
1
Shorelines
1
Tables
1
Tidal power
1
Timber
1
Trees
3
Underground storage
1
Waste disposal
1
Woodlots
1
Wounds and injuries
1
Zoology
1