Safety flooring and anti-slip materials consist of textured plates, non-slip materials, and surface-roughened treads that are designed to prevent personnel from slipping and falling on floors, steps and walkways. There are many different types of safety flooring and anti-slip materials. Examples include grills, grids, grip plates, grip grates, textured plates, non-slip coatings, abrasive coated tapes, and expanded metal step covers. Self-cleaning and self-draining products often have diamond-shaped openings and serrated teeth. Safety flooring and anti-slip materials with larger diamond-shaped openings are made from thicker materials for high loading applications. Slotted surfaces are slip-resistant in all directions and permit the passage of air, water and light. Surface-roughened, textured treads with round, de-bossed holes allow fluids, mud, chips and debris to drain away. Safety flooring and anti-slip materials with smaller holes are suitable for plants, factories and processing facilities where oil and grease may cause accidents.