Unlike many other metals which form passivating oxide layers, iron oxides occupy more volume than iron metal, and thus iron oxides flake off and expose fresh surfaces for corrosion.

Unlike iron oxides, the hydroxides do not adhere to the bulk metal.

Unlike copper and tin, liquid iron dissolves carbon quite readily.

Unlike stainless steel, however, these artifacts owe their durability not to chromium but to their high phosphorus content, which, together with favorable local weather conditions, promotes the formation of a solid protective passivation layer of iron oxides and phosphates, rather than the non-protective cracked rust layer that develops on most ironwork.

Unlike modern suspension bridges, Telford used individually linked iron eye bars for the cables.

Unlike during the pre-war years when pig iron was shipped on flat boats on the Shenandoah River to Harpers Ferry, during the war, the pig iron was shipped by wagon to Gordonsville, and subsequently by rail to Richmond for use at the Tredegar Iron Works.

Unlike some other uses of iron and steel, railway rails are subject to very high stresses and have to be made of very high-quality steel alloy.

Unlike many of the surrounding buildings, the school retains much of its original cast iron fences despite the metal shortages during the Second World War.

Unlike many other lighthouses, it retains its original gallery railings, which are of iron and bellied ( i. e. curved out in width at their crowns ) towards the top.

Unlike the Crime Syndicate though, the Justice Lords are not simply evil opposites of their good counterparts ; rather, they rule their world with an iron fist in order to end war and crime.

Unlike finger waves, the Marcel Wave is made with a hot curling iron, and is more permanent than finger waves.

Unlike the caliper disc, the Ausco-Lambert utilized twin expanding discs that rubbed against the inner surface of a cast iron brake drum, which doubled as the brake housing.

Unlike modern steelmaking, it increased the amount of carbon in the iron.

Unlike most satellites in the outer Solar System, which are mostly composed of water-ice, Io is primarily composed of silicate rock surrounding a molten iron or iron sulfide core.

Unlike the nearby Chirk Aqueduct and Pontcysyllte Aqueduct, which have a cast iron trough, the Vyrnwy Aqueduct is built of stone and is puddled.

Unlike other methods, including cast iron cylinder liners, Nikasil allowed very large cylinder bores with tight tolerances and thus allowed existing engine designs to be expanded easily.

Unlike the other metals used for this process ( Co, Ni, Ru ), which remain in the metallic state during synthesis, iron catalysts tend to form a number of phases, including various oxides and carbides during the reaction.

Unlike oxy-fuel cutting, the PAC process can be applied to cutting metals which form refractory oxides such as stainless steel, cast iron, aluminum, and other non-ferrous alloys.

Unlike the earlier iron hotplate the steel spiral was heated to red heat imparting more heat the pan than the hotplate could.

Unlike a power transformer, an ignition coil has an open magnetic circuit-the iron core does not form a closed loop around the windings.

Unlike mining towns of the region whose contours traced the haphazard routes of streambeds and ore bodies, railroad towns were orderly geometric affairs.

Unlike the mineral deposits of the Upper Harz, the ore deposits at the Rammelsberg were caused by the escape of hot, metal-bearing, thermal springs on the sea floor in the Devonian period.

Unlike most silver ore deposits, which occur in long thin veins, those of the Comstock Lode occurred in discrete masses often hundreds of feet thick.

Unlike many South American countries, Paraguay has few mineral resources and very little history of mining success.

Unlike that of much of Colorado, which was founded on the mining of gold and silver, the settlement of Larimer County was based almost entirely on agriculture, an industry that few thought possible in the region during the initial days of the Colorado Gold Rush.

" Unlike other communities in Amador County, which were founded on gold mining, Ione was a supply center, stage and rail stop, and agricultural hub.

Unlike most of the other mining towns in the county, Copperopolis ' claim to fame is not gold, but copper.

Unlike the earlier northern Idaho mining areas of Florence ( northeast of Riggins ) and Pierce, the Boise Basin mines provided good returns over a period of many years, the peak years being 1863-66, during and immediately after the Civil War.

Unlike that of other writers from the mining community, his fiction is more concerned with individuals, in particular women, than with politics.

Unlike the Lower Saxon, Eastphalian and Thuringian dialects of the surrounding region, this was an Ore Mountain dialect from Saxony and Bohemia, that went back to the settlement of mining folk from that area in the 16th century.

Unlike coal and nuclear, there are no fuel costs, pollution, mining safety or operating safety issues.

Unlike most mining towns, Elkhorn was populated mostly by married European immigrants.

Unlike other contemporary mining railways, survived the market crash of natural nitrate and today provides a variety of transportation services, highlighting the transport of mining products and consumables such as copper cathodes and sulfuric acid, through a network of 900 kilometers

Unlike traditional data mining algorithms, which look for

Unlike the Great Orme, the Little Orme has not been developed for copper mining or tourism.

Unlike later-formed anthracite-hauling railroads tied to other portions of the coal region, such as the Lehigh Valley and the Delaware, Lackawanna & Western, whose corporate charters allowed them to also be involved in mining operations, the Reading Railroad's charter prohibited it.

Unlike earlier longwall mining, the use of a conveyor belt parallel to the coal face forced the face to be developed along a straight line.

Unlike many other mining sites, the industrial facilities which are located in the very middle of the town, were never dismantled.

( Unlike the more northern parts of the West Coast, Westland has not developed coal mining.

Unlike all of the other instances, this instance has an elaborate backstory concerning the town of Thunder Mesa, founded by Henry Ravenswood to support the mining of Big Thunder Mountain.

Unlike many other towns in the region, Charlton was not established as a result of gold mining, but for pastoral purposes and the proximity to a permanent water supply ( the Avoca River ).