A roof may be reinforced with (boron steel).Logical formLearned from2 sentences. A (boron powder) can be harmless.Logical formLearned from2 sentences. Researcher may fashion wires by expossing fibers of boron.Logical formLearned from2 sentences. Fibers can be constituted-of-or-filled-with boron.Logical formLearned from2 sentences. (Boron fibers) may penetrate bone.Logical formLearned from2 sentences. Farmers may need a pound of boron.Logical formLearned from2 sentences. Boron can be an ingredient.Logical formLearned from2 sentences. (Boron fibers) can be in (engineering resins).Logical formLearned from2 sentences. A (distribution pattern) can be for (boron compounds).Logical formLearned from2 sentences. Boron may be priced.Logical formLearned from2 sentences. (Boron products) may be produced from a (surface mine).Logical formLearned from2 sentences. (Test results) may reveal levels of boron.Logical formLearned from2 sentences. (Boron toxicity) may result in yellow spots.Logical formLearned from2 sentences. Boron may remain immobile.Logical formLearned from2 sentences. Techniques can be for depositting coatings of cubic (boron nitride).Logical formLearned from2 sentences.