recovery of coal - remotely sensed data
- reflux
- refolded
- refolded fold
- refolding
- refoliation
- refract
- refracted
- refracted energy
- refracted event
- refracted wave front
- refracted wavefront
- refracted-wave traveltime
- refracted-wave traveltime graph
- refracting interface
- refracting point
- refraction
- refraction amplitude attenuation
- refraction arrangement
- refraction arrival time
- refraction charge
- refraction coefficient
- refraction correlation method
- refraction data
- refraction data interpretation
- refraction data processing
- refraction data set
- refraction dataset
- refraction diagram
- refraction effect
- refraction equipment
- refraction event tracking
- refraction exploration
- refraction exploration area
- refraction information
- refraction interpretation method
- refraction investigations
- refraction line
- refraction losses
- refraction marker
- refraction measurements