Query: ...there [is] anecdotal and other evidence suggesting similar melts from 1938-43 and on other occasions.

Relevant passages:
Soldering <=SEP=> Soldering ( AmE : -LSB- ˈsɒdərɪŋ -RSB- , BrE : -LSB- ˈsɒldərɪŋ -RSB- ) , is a process in which two or more items ( usually metal ) are joined together by melting and putting a filler metal ( solder ) into the joint , the filler metal having a lower melting point than the adjoining metal . Soldering differs from welding in that soldering does not involve melting the work pieces . In brazing , the filler metal melts at a higher temperature , but the work piece metal does not melt . In the past , nearly all solders contained lead , but environmental and health concerns have increasingly dictated use of lead-free alloys for electronics and plumbing purposes .

Lava <=SEP=> Lava is the molten rock expelled by a volcano during an eruption . The resulting rock after solidification and cooling is also called lava . The molten rock is formed in the interior of some planets , including Earth , and some of their satellites . The source of the heat that melts the rock within the earth is geothermal energy . When first erupted from a volcanic vent , lava is a liquid usually at temperatures from 700 to .   A lava flow is a moving outpouring of lava , which is created during a non-explosive effusive eruption . When it has stopped moving , lava solidifies to form igneous rock . The term lava flow is commonly shortened to lava . Although lava can be up to 100,000 times more viscous than water , lava can flow great distances before cooling and solidifying because of its thixotropic and shear thinning properties .   Explosive eruptions produce a mixture of volcanic ash and other fragments called tephra , rather than lava flows . The word lava comes from Italian , and is probably derived from the Latin word labes which means a fall or slide . The first use in connection with extruded magma ( molten rock below the Earth 's surface ) was apparently in a short account written by Francesco Serao on the eruption of Vesuvius between May 14 and June 4 , 1737 . Serao described `` a flow of fiery lava '' as an analogy to the flow of water and mud down the flanks of the volcano following heavy rain .

Fuse (electrical) <=SEP=> In electronics and electrical engineering , a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit including the source of power and the load . Its essential component is a metal wire or strip that melts when too much current flows through it , thereby interrupting the current . It is a sacrificial device and once a fuse has operated it is an open circuit , and it must be replaced or rewired , depending on type .   Fuses have been used as essential safety devices from the early days of electrical engineering , and today there are thousands of different fuse designs which have specific current and voltage ratings , breaking capacity and response times , depending on the application . The time and current operating characteristics of fuses are chosen to provide adequate protection without needless interruption . Wiring regulations usually define a maximum fuse current rating for particular circuits . Short circuits , overloading , mismatched loads , or device failure are the prime reasons for fuse operation .   A fuse is an automatic means of removing power from a faulty system ; often abbreviated to ADS ( Automatic Disconnection of Supply ) . Circuit breakers can be used as an alternative design solution to fuses , but if used as direct replacements , their different characteristics must be taken into account .