open hearth's Usage Examples:

"open hearth" roasters, which were manually stirred (a practice called "rabbling") using rake-like tools to expose unroasted ore to oxygen as the reaction.

His daughter, Gertrude, lit the first open hearth furnace at the new Central Steel Company in 1915.

States to manufacture commercial quantities of steel utilizing the acid open hearth process.

later used in glass and steel making, to increase the efficiency of open hearth furnaces, and in high pressure boilers and chemical and other applications.

Monongahela River from J"L"s Eliza Furnaces to the Bessemer converters (later, open hearth furnaces) and rolling mills at J"L"s South Side facility.

(Capra ibex) and Alpine marmot (Marmota marmota) fossils, remains of open hearths and Paleolithic stone tools of the Aurignacian culture dated to 65,000.

In the 20th century, the US industry successively adopted the open hearth furnace, then the basic oxygen steelmaking process.

production of steel from molten pig iron before the development of the open hearth furnace.

The open hearth was later moved towards the cross passage and became a fireplace with.

The Soudan hematite was used in the open hearth furnace, where the density of the ore, called Vermilion Lump, was needed.

Thirteen blast furnaces, forty-nine open hearth furnaces, twenty-nine finishing mills and sixty-eight coke-oven batteries.

In the 1950s as Templeborough's open hearth furnaces had become outdated USC set up “Operation SPEAR” (Steel Peech Electric Arc Reorganization), to introduce six modern electric arc furnaces to replace the 14 open hearth furnaces.

the site ended in 1978; the site had manufactured steel with an open hearth furnace, the type of melting shops that British Steel wanted to discontinue.

Synonyms:

reopen, lever, jimmy, unbolt, uncork, pry, lance, prize, break open, gap, open up, breach, unlock, prise, unseal, click open, unbar,

Antonyms:

seal, lock, bolt, cork, bar, close,