SteelOrbis has learned that US domestic plate prices have firmed in the past week, from an average of $28.00 cwt. ($617/mt or $560/nt), ex-mill, to a range of $28.50-$29.50 cwt. ($628-$650/mt or $570-$590/nt), ex-mill. Sources close to SteelOrbis have indicated that one “unnamed” plate mill may be on the verge of announcing a maintenance outage, which, if true, may help push prices higher.