Rectilinear culvert structure

Recuperator for floating materials

Recyclable composite material and method of using composite

Recycle composition paper flake board and method of production

Recycled fatty acid crude petroleum recovery system

Recycled material mixing machine

Recycled roof shingles and method

Recycled rubber railroad crossties

Recycling apparatus for waste water

Recycling of artificial turf

Recycling of grey water

Recycling of road surfacings

Recycling of waste water

Redeployable high temperature oil boom

Reduced abrasiveness with micronized weighting material

Reduced contamination sampling

Reduced dust acoustic panel

Reduced moment anchor hub

Reduced radiated-noise rail

Reduced shock landing collar