2 When the inclination angle of the ore body is smaller than the natural angle of repose of the ore, the thickness is thinner and the bottom plate is relatively flat, the pseudo-tilted working face or the fan-shaped working face can be used for propulsion, and the electric raft should be located in the patio connecting passage;
3 The angle of inclination of the ore body is greater than the natural angle of repose of the ore. When the thickness of the ore body is uneven or the floor undulation is variable, the horizontal working face should be used for propulsion; the electric raft can be located in the patio contact road;
4 When the thickness of the ore body is less than 3m , it should be promoted by reverse inclination and full thickness. When the thickness of the ore body is greater than 3m , it is advisable to adopt stratified propulsion or super-layer advancement.
Numbers & Alphabets Puzzle Mat
Numbers & Alphabets Puzzle Mat has a total of 10 pieces numbers 0-9 and 26 pieces alphabets A-Z.
Made from bright, assorted colors that can be easily arranged to you or your child's preference. Made out of high density Eva foam for the greatest durability and comfort. Eva foam is durable, non-toxic, premium foam that is lightweight and easy to assemble. It is also water, mold and mildew resistant which makes it easy to clean. Just wipe with damp cloth & mild soap. Build creative shapes too each letter and number can be removed from the baby puzzle mat for interactive learning, allowing children to develop gross motor skills, hand-eye coordination, logic, reasoning, and visual sensory growth. Use to design play areas in homes, schools, day cares, and more. Can also be used on walls around play area. The top of the foam puzzle mat is grooved with a non-skid bottom for ultimate safety and protection.
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