Geology - R
R wave
rabatage
rabbit-eye
rabbittite
rabble
rabbler
rabbling
rabbling tool
race
raceway
rack
rack back
rack frame
rack gear
rack railroad
rack up
rack-a-rock
racked timbering
racking
racking table
radar
radial
radial arm
radial axis
radial dikes
radial drainage
radial drainage pattern
radial drill
radial drilling
radial machineman
radial percussive coal cutter
radial pressure
radial slicing
radial strain
radial stress
radial velocity
radial ventilation
radial-flow fan
radian
radiant energy
radiated
radiated pyrite
radiating
radiation absorbed dose
radiation damage
radiation detector
radiation-type gage
radio link
radioactive
radioactive decay
radioactive disintegration
radioactive dusts
radioactive element
radioactive mineral
radioactive series
radioactive tracer element
radioactive waste
radioactivity
radioactivity log
radioactivity prospecting
radioaltimeter
radiocarbon
radiocarbon dating
radiochemistry
radioelement
radiogenic
radiograph
radiography
radiohalo
radioisotope
Radiolaria
radiolarian ooze
radiolite
radiolite survey instrument
radiolitic
radiometallography
radiometer
radiometric assay
radiometric ore sorter
radiometric prospecting
radiophone
radiophyllite
radiore method
radium
radium G
radiumite
radius
radius of curve
radius of gyration
radius of rupture
radius ratio
radon
radon daughter
radon progeny
raffinate
raft
rafter timbering
rafting
rag
ragged rolls
ragging
raggy stone
ragstone
rail
rail gage
rail haulage system
rail riffles
rail track ballast
rails
rain chamber
rain gage
rain shadow effect
rain wash
rainbow chalcedony
rainbow quartz
rainwash
raise
raise borer
raise climber
raised shaft
raising
rait
rake
rake blade
rake classifier
rake thickener
rake vein
rakers
raking strut
Raky boring method
Raleigh's law
Ralston's classification of coal
ralstonite
ram
ram operator
ram pump
ramdohrite
rammel
rammelsbergite
rammer
ramming
ramming and patching refractories
ramp
ramp valley
random orientation
random pattern
random sample
random set
random stone
Randupson process
rang
range
range line
range of stress
range pole
ranging rod
rank
rank variety
Rankine's formula
Rankine scale
Rankine's theory
rankinite
ransomite
rap
rapakivi
rapid blow drilling
rapid excavation
rapid plow
rap-in
rappage
rapping
rapping roller
rare earths
rarefaction
rashings
Rasorite
rasp
raspberry spar
raspite
ratchet
ratchet drill
ratchet man
ratchet-and-pawl mechanism
rate
rate action (nonstandard)
rate determining step
rate of advance
rate of grade
rated capacity
rated horsepower
rated load
rated output current
rated output voltage
rates of reduction
rathite
rathite-II
rathole
rathole bit
rat-holing
rating
rating flume
ratio of absorption
ratio of concentration
ratio of enrichment
ratio of reduction
ratio of size reduction
ratiometer
rational analysis
rattle boxes
rattler
rattler test
rattlesnake ore
rauvite
ravelly ground
ravine
raw
raw coal
raw coal screen
raw dolomite
raw feed coal
raw fuel
raw material
raw mica
raw ore
rawhide hammer
ray craters
raydist
Rayleigh wave
Raymond flash dryer
Raymond mill
rays
raywork
razor saw
razor stone
razorback
reach
reactance
reaction border
reaction curve
reaction line
reaction pair
reaction principle
reaction rim
reaction series
reaction-zone width
reactive
reactive reagent
reactive silica
reactivity
readily extractable metal
Reading jig
real property
realgar
ream
ream back
reamer
reamer bit
reamer shell
reamer stone
reaming
reaming bit
reaming diamond
reaming pilot
reaming pilot adapter
reaming pilot horn
reaming ring
reaming shell
rebar
recalescence
recarburize
recarburizing
recast
receiving hopper
Recent
receptor
recession
recessional moraine
recharge
reciprocal lattice
reciprocal strain ellipsoid
reciprocating
reciprocating drill
reciprocating engine
reciprocating feeder
reciprocating flight conveyor
reciprocating pump
reciprocating screen dryer
recirculating water
recirculation
recirculation of air
recirculation of water
reclaiming
reclaiming conveyor
reclamation
recleaner cell
reclosing circuit breaker
recommended exposure limit
recomposed granite
recomposed rock
reconnaissance
reconnaissance map
reconnaissance sampling
reconnoiter
reconstructed amber
reconstructed granite
reconstructed turquoise
reconstruction
reconstructive transformation
record borehole
record hole
record table
recorder
recording gage
recover
recoverable grade
recovered sulfur
recovery
recovery plant
recreational mining
recrystallization
recrystallized silicon carbide
rectangular drainage pattern
rectangular pattern
rectangular shaft
rectification
rectifier
rectifying device
rectorite
recumbent fold
recuperator
recurrence horizon
red antimony
red arsenic
red beds
red cake
red chalk
red clay
red cobalt
red copper ore
red copper oxide
red dog
red earth
red glassy copper ore
red heart
red hematite
Red I plate
red iron froth
red iron ore
red iron vitriol
red lead
red lead ore
red lime mud
red manganese
red mercury
red metal
red mud
red ore
red orpiment
red oxide of copper
red oxide of zinc
red roast
red schorl
red silver
red silver ore
red vitriol
red zinc ore
red zinc oxide
redd
redd bing
reddingite
reddle
reddleman
reddsman
red-hard
redingtonite
redistilled metal
redledgeite
redox potential
redrill
redruthite
reds
redsear
reduce
reduced iron
reduced level
reduced natural frequency
reducing agent
reducing atmosphere
reducing flame
reducing furnace
reducing roast
reduction
reduction cell
reduction factor
reduction furnace
reduction of area
reduction of levels
reduction ratio
reduction roasting
reduction smelting
reduction to center
reduzate
Redwood number
Ree's torsion anemometer
reed
reedmergnerite
reef
reef cap
reef drive
reef knoll
reef limestone
reef wash
reefing
reel
reel boy
reel locomotive
reenforcing bar
reeve
reeving
reference axes
reference electrode
reference level
reference mark
reference plane
reference seismometer
reference size
reference standard
reference station
referencing
refikite
refine
refined iron
refinery
refining
refining heat
refining temperature
reflected wave
reflected-light microscope
reflected-light microscopy
reflection
reflection goniometer
reflection mechanism
reflection method
reflection seismic prospecting
reflection shooting
reflection wave
reflectivity
refraction
refraction method
refraction seismic prospecting
refraction shooting
refractive index
refractometer
refractoriness
refractory
refractory bonding mortars
refractory brick
refractory clay
refractory lining
refractory material
refractory ore
refractory stone
refractory ware
refresher training
refrigerant
refrigeration
refrigeration plant
refuge chamber
refuge hole
refusal
refuse
refuse conveyor
refuse discharge pipes
refuse elevator
refuse extraction chamber
refuse extractor
refuse rotor
refuse worm
regal jade
regalian doctrine
regenerated anhydrite
regenerated dense medium
regeneration
regenerative chambers
regenerative furnace
regenerative heating
regenerative principle
regenerator checkers
regime
regional
regional anomaly
regional dip
regional metamorphism
regional unconformity
registered premises
reglette
regolith
regular lay
regular polygon
regular sampling
regular ventilating circuit
regular-lay left lay
regular-lay right lay
regulated feed
regulated split
regulating gate
regulator
regulator door
regulus
reheater
reheater load
reheating furnace
Rehisshakenhobel
reinerite
reinforcing bar
reinforcing steel
reinite
reiteration
reject
reject elevator
reject gate
rejuvenation
relative age
relative biological effectiveness
relative bulk strength
relative compaction
relative consistency
relative dating
relative density
relative humidity
relative movement
relative roughness
relative time
relative variogram
relative weight strength
relaxation
relay
relay haulage
relay motorman
release analysis
release fracture
release mesh
released mineral
reliability of method
relic
relict
relict texture
reliction
relief
relief feature
relief holes
relief limonite
relief map
relief valve
relief well
relieving cut
relieving platform
relieving shot
relighter flame safety lamp
relighting station
reluctance
remanence
remanent magnetization
remnant
remolded soil
remolding
remolding index
remolding sensitivity
remolinite
remote control
remote control support system
remote sensing
renardite
rending
rendrock
renierite
reniform
Renn-Walz process
rensselaerite
rent and royalty
reopening sealed area
repairman
repeated twinning
replaceable hydrogen
replaceable insert
replaceable pilot
replacement
replacement bit
replacement deposit
replacing switch
replica
replicate sampling
repose angle
representation work
representative fraction
representative sample
rerailer
rescue
rescue apparatus
rescue station
rescue team
rescue-car
research
resection
resequent fault-line scarp
reserve
reserve base
reserved coal
reserved lands
reserved mineral
reserves
reservoir rock
reset action (nonstandard)
reset bit
resettable
resetting
residual
residual arkose
residual boulder
residual clay
residual element
residual errors
residual field
residual gravity
residual liquid
residual magnetic field
residual magnetism
residual minerals
residual oil
residual ore deposit
residual placer
residual stress
residuals
residue
residuite
residuum
resilience
resilient couplings
resiliometer
resin
resin jack
resin rodlets
resin tin
resin-anchored bolts
resin-in-pulp
resin-in-pulp (RIP) process
resinite
resinite coal
resinoid
resinous
resinous coal
resistance
resistance methanometer
resistance of detonator
resistance strain gage
resistance to blasting
resistivity
resistivity method
resistivity profile
resistor
resoiling
resolution
resolution limit
resolved-time method
resolving power
resonance
resonance screen
resonant frequency drilling
resorption border
resource
resource characterization
respirable-size particulate
respirator
respirator protection factor
respiratory cycle
resplendent
rest magma
restoration
restore circulation
restrained cable plug and socket
restrained plug and socket
restricted earth fault protection
restricted resources
rests
resue
resuing
resurgence
retaining mesh
retaining ring
retaining screen
retaining structure
retardation
retarding conveyor
retentivity
Retger's salt
retgersite
reticular
reticulate
reticulate texture
reticulated
reticulated veins
reticule
reticulite
retiform
retigen
retinalite
retinasphalt
retinite
retinosite
retonation wave
retort
retort pressman
retorting
retract
retractable wedge
retracting
retreat
retreating longwall
retreating system
retrievable inner barrel
retrievable wedge
retrieving ring
retrograde metamorphism
retrogressive metamorphism
return
return air
return aircourse
return circulation
return man
return water
returning charge
returning fluid
return-line corrosion tester
returns
retzian
reussin
reussinite
revdanskite
revegetation
reverberate
reverberation
reverberatory furnace
reversal
reversal of ventilation
reverse bearing
reverse bend
reverse book fashion
reverse circulation
reverse classification
reverse fault
reverse feed
reverse gear
reverse initiation
reverse laid rope
reverse reaming
reverse-circulation core barrel
reverse-current braking
reversed
reversed bratticing
reversed fault
reversed flush boring
reversed loader
reverse-feed gear
reversible auxiliary ventilation
reversible endless-rope system
reversible pick
reversible transducer
reversing clutch
reversing doors
reversing machine
reversing mill
reversing shaft
reversing thermometer
revetment
revolution
revolving screen
revolving shovel
revolving washing screens
rewash
rewash box
rewdanskite
reworked
Reynolds number
Rf value
rhabdite
rhabdomancy
rhabdophane
rheid
rheid folding
rheidity
Rhenania furnace
Rhenish furnace
rhenium
Rheolaveur washer
rheology
rheomorphism
rheostat
rheostat rope
rhinestone
rhodesite
rhodite
rhodium
rhodium gold
rhodochrome
rhodochrosite
rhodolite
rhodonite
rhodotilite
rhoenite
rholites
rhomb
rhomb spar
rhombarsenite
rhombenglimmer
rhombic
rhombic dodecahedron
rhombic mica
rhombic quartz
rhombic system
rhomboclase
rhombohedral division
rhombohedral iron ore
rhombohedral system
rhombohedron
rhomboid
rhombus
rhums
rhyacolite
rhyodacite
rhyolite
rhyolite glass
rhyolite-porphyry
rhythmic crystallization
rhythmic driving
rhythmic sedimentation
rhythmite
rib
rib boss
rib dust
rib hole
rib line
rib lining
rib mesh
rib pillar
ribbed roll
ribbing
ribbon
ribbon brake
ribbon diagram
ribs
rib-side
rib-side gate
rib-side pack
rice coal
Richards' pulsator classifier
Richards' pulsator jig
Richards' shallow-pocket hindered-settling classifier
richetite
richmondite
Richter scale
rickardite
ricket
rid
ridding
riddle
ride over
rider
ridge
ridge fillet
ridge terrace
Ridgeway fiter
riding
Ridley-Scholes bath
rid-up runners
riebeckite
Riecke's principle
riemannite
riffle
riffle bars
riffle box
riffler
rifle
rifle bar
rifle nut
rifling
rift
rift structure
rift valley
rift zone
rifter-trimmer
rifting
rig
rig up
rigged
rigger
rigging
rigging bar
right bank
right lang lay
right lay
right line
right long lay
right regular lay
right running
right-angled block
right-hand cutting tool
right-hand feed screw
right-hand lay
right-lateral fault
right-lateral fault
right-of-way
rigid arch
rigid coupling
rigid double tube
rigid ducts
rigid foam
rigid frame
rigid hammer crusher
rigid pavement
rigid solution
rigid urethane foam
rigidity
rigidity modulus
rigid-type double-tube core barrel
rig-up
rig-up time
rill
rill stope
rilles
rim
rim flying
rim texture
rim walking
rimmed steel
rimrock
rimrocking
rincon
ring
ring arch
ring coal
ring complex
ring crusher
ring dike
ring fault
ring holes
ring main
ring ore
ring pit
ring stone
ring stress
ring tension
ring wall
ring-cut
ringed out
ringer
ring-fracture intrusion
ring-induction method
ringing
ring-roll crusher
ring-roll grizzly
ring-roll press
Ringrose methane recorder
Ringrose pocket methanometer
ring-shaped occurrences
ring-stress bursts
ring-type reaming shell
ring-type wedge
rinkite
Rinman scale
rinneite
rinsing
rinsing water
Rio Tinto process
rip
rip current
rip plates
rip tide
riparian
riparian rights
rippability
ripper
ripping
ripping bed
ripping blasting
ripping face support
ripping lip
ripping scaffold
ripple
ripple board
ripple index
ripple mark
ripple marks
ripple marks of oscillation
ripple voltage
ripple-mark index
riprap
rise
rise and fall
rise face
rise heading
riser
rising
rising column
rising current
rising main
rising shaft
rising-head test
Rittinger's law
Rittinger table
rittingerite
rivelaine
river bar
river claim
river drift
river flat
river mining
river pebble
river plain
river quartz
river right
river run gravel
river sand
river-bar placer
rives in
rivet
rivet forge
rivet heater
rivet snap
rivet test
rivet tester
riveter
riving seams
R.K. process
road
road cleaner
road dust
road metal
road roller
roadbed
roadhead
road-making plant
roadman
road-mix method
roadside pack
roadster
roadway
roadway cable
roadway consolidation
roadway support
roast
roast sintering
roast stall
roaster
roaster slag
roasting
roasting and reaction process
roasting and reduction process
roasting cylinder
roasting furnace
robbing
robbing an entry
robbing pillars
Robiette process
Robins-Messiter system
Robinson and Rodger system
robinsonite
robot loader
Robson and Crowder process
Roburite
roca
roche
rock
rock asphalt
rock association
rock base
rock bit
rock body
rock bolt
rock bolting
rock bump
rock burst
rock butter
rock car runner
rock channeler
rock chute
rock cleavage
rock cone bit
rock contractor
rock cork
rock cover
rock crusher
rock crystal
rock cut
rock cuttings
rock cycle
rock dredge
rock drift
rock drill
rock driller
rock drivage
rock dust
rock duster
rock dusting
rock excavation
rock fabric
rock factor
rock failure
rock fault
rock filling
rock flour
rock flow
rock formation
rock foundation
rock fracture
rock glacier
rock glass
rock gypsum
rock hardness
rock hole
rock hound
rock kicker
rock kindred
rock leather
rock loader
rock meal
rock mechanics
rock melt
rock milk
rock miner
rock navvy
rock pedestal
rock phosphate
rock pillar
rock pressure
rock pressure burst
rock quartz
rock rake
rock roll
rock ruby
rock salt
rock sediment
rock series
rock sharp
rock shovel
rock silk
rock slide
rock slip
rock slope
rock soap
rock spar
rock splitter
rock stress
rock temperature
rock tunnel
rock turquoise
rock type
rock waste
rock weight
rock wool
rockbridgeite
rock-chute mining
rock-drill bit
rock-dust barrier
rock-dust man
rock-dust testing kit
rock-dust zone
rock-dusting machine
rocker
rocker arm
rocker arm shovel
rocker bottom
rocker dump car
rocker shovel
rocker sieve
rockfall
rock-fill dam
rock-forming mineral
rock-forming mineral
rock-forming silicate minerals
rockhead
rocking
rocking beam
rocking cradle
rocking lever
rock-loader operator
rockman
rockman helper
rockshaft
rockslide
Rockwell hardness test
Rockwell machine
Rockwell tester
rockwood
rod bit
rod clearance
rod coupling
rod damp
rod dope
rod drag
rod drop
rod elevator
rod friction
rod mill
rod millman
rod plug
rod proof
rod pull
rod puller
rod reaming shell
rod reducing bushing
rod reducing coupling
rod sag
rod shaft
rod shell
rod slack
rod slap
rod snap
rod spear
rod stand
rod stock
rod string
rod stuffing box
rodding
rodingite
Rodio-Dehottay process
rodlike
rodman
rodney
rods
roentgen
roentgen equivalent man
roentgenite
roentgenite
roentgenogram
roentgenograph
Roeschen method
Roesing lead pump
Roesing wires
Roesler process
roestone
Rohbach solution
Roheisenzunder process
Rohrbach solution
roke
roll
roll compacting
roll crusher
roll feeder
roll jaw crusher
roll operator
roll orebody
roll scale
roll screen
roll sulfur
rolled metal
rolled plate
rolled-steel joist
roller
roller bearings
roller bit
roller chain
roller cone bit
roller conveyor
roller gate
roller grip
roller repairman
roller rock bit
roller screen
roller-cone core bit
roller-cutter bit
rollerman
rolley man
roll-front orebody
rolling and quartering
rolling cradle
rolling cutter bit
rolling plant
rolling resistance
rolling-up curtain weir
rollman
Roman cement
Roman ocher
Roman pearl
romanechite
romanite
romeite
romometer
rondle
roof
roof bolt
roof bolter
roof bolting
roof control
roof cut
roof cutting
roof drill
roof jack
roof layer
roof movement meter
roof pendant
roof pressure
roof rock
roof shale
roof station
roof stone
roof stringer
roof testing
roof work
roof-framy
roofing
roofing hole
roof-testing tool
roof-to-floor convergence
roof-up
room
room boss
room conveyor
room entry
room neck
room system with caving
room-and-pillar
room-and-pillar mining
room-and-pillar with waste filli
rooseveltite
root clay
root deposit
root hook
rooter
root-mean-square value
rope and button conveyor
rope core
rope cutter
rope diameter
rope driver
rope driving
rope drum
rope fastening
rope guide
rope haulage
rope haulage systems
rope lay
rope plucking
rope rider
rope roof bolt
rope socket
ropeway
Ropp furnace
roquesite
rosasite
roscherite
roscoelite
rose beryl
rose bit
rose copper
rose diagram
rose of cracks
rose opal
rose quartz
rose steel
rose topaz
rose vitriol
roselite
rosette
rosette copper
rosette texture
rosickyite
rosin
rosin blende
rosin jack
rosin tin
rosin zinc
rosined joints
rosing
Rosin-Rammler equation
rosite
rosiwal analysis
rosolite
Ross and Welter furnace
Ross feeder
Rossie furnace
Rossi-Forel intensity scale
Rossi-Forel scale
rosthornite