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About usCorporate responsibilityCareersNewsroomInvestorGrants and givingiStockUnsplashPhotos.comBecome an AffiliateCustomer supportEvents and webinars B.", was in use at the least as early as 1814.[67] Softer or harder pencil grades have been described by a sequence or successive Bs or Hs which include BB and BBB for successively softer sales