| http://www.w3.org/ns/prov#value | - We need to make sure they are mixing the concrete mix, sand and gravel in the right proportions every time to ensure the concrete is consistently good for building.For the contractor, the visit was an opportunity to show the progress he has made on the school while addressing the engineers' concerns.We have no problems with the construction, and we will address all the issues identified, said Kha
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