instance_of weiskittel-roehle burial vault
Cast iron is a ___MASK8___ of iron - carbon alloys with a carbon content greater than 2 %. Its usefulness derives from its relatively low melting ___MASK40___ . The alloy constituents affect its colour when fractured : white cast iron has carbide impurities which allow cracks to pass straight through ; grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the ___MASK16___ breaks ; ductile cast iron has spherical graphite " nodules " which stop the crack from further progressing . Ashlar is finely dressed ( ___MASK12___ , worked ) ___MASK62___ , either an individual ___MASK6___ that has been worked until squared or the ___MASK62___ built of such ___MASK6___ . It is the finest ___MASK6___ ___MASK62___ unit , generally cuboid , mentioned by Vitruvius as opus isodomum , or less frequently trapezoidal . Precisely ___MASK12___  on all faces adjacent to those of other stones , ashlar is capable of very thin joints between blocks , and the visible face of the ___MASK6___ may be quarry - faced or ___MASK4___ a variety of treatments : tooled , smoothly polished or rendered with another material for decorative effect . In geometry , a cuboid is a convex polyhedron bounded by ___MASK35___ quadrilateral faces , whose polyhedral graph is the same as that of a cube . While mathematical ___MASK54___ refers to any such polyhedron as a cuboid , other sources use " cuboid " to refer to a ___MASK37___ of this type in which each of the faces is a rectangle ( and so each pair of adjacent faces meets in a right angle ); this more restrictive type of cuboid is also known as a rectangular cuboid , right cuboid , rectangular ___MASK21___ , rectangular hexahedron , right rectangular prism , or rectangular parallelepiped . Iron is a ___MASK3___ element with ___MASK10___ Fe ( from ) and atomic number 26 . It is a metal in the first transition series . It is by mass the most common element on Earth , forming much of Earth ' s outer and inner core . It is the fourth most common element in the Earth ' s crust . Its abundance in rocky planets like Earth is due to its abundant production by fusion in high - mass stars , where it is the last element to be produced with release of energy before the violent ___MASK1___ of a supernova , which scatters the iron into space . In chemistry , a carbide is a compound composed of carbon and a less electronegative element . Carbides can be generally classified by ___MASK3___ bonding type as follows : ( i ) salt - like , ( ii ) covalent compounds , ( iii ) interstitial compounds , and ( iv ) " intermediate " transition ___MASK32___ carbides . Examples include calcium carbide ( CaC ), silicon carbide ( SiC ), tungsten carbide ( WC ) ( often called simply " carbide " when referring to machine tooling ), and cementite ( FeC ), each used in key industrial applications . The naming of ionic carbides is not systematic . Carbon ( from " coal ") is a ___MASK3___ element with ___MASK10___ C and atomic number 6 . It is nonmetallic and tetravalent  making four electrons available to form covalent ___MASK3___ bonds . Three isotopes occur naturally , C and C being stable , while C is a radioactive isotope , decaying with a half - life of about 5 , 730 years . Carbon is one of the few elements known since antiquity . ___MASK62___ is the ___MASK74___ of structures from individual units , which are often laid in and bound together by mortar ; the term " masonry " can also refer to the units themselves . The common materials of masonry construction are brick , ___MASK74___ stone such as marble , granite , travertine , and limestone , cast stone , concrete block , glass block , and cob . ___MASK62___ is generally a highly durable form of construction . However , the materials used , the quality of the mortar and workmanship , and the pattern in which the units are assembled can significantly affect the durability of the overall masonry construction . A person who constructs masonry is called a mason or bricklayer . Tin is a ___MASK3___ element with the ___MASK10___ Sn ( for ) and atomic number 50 , is a post - transition metal in group 14 of the periodic ___MASK57___ . It is obtained chiefly from the mineral cassiterite , which contains tin dioxide , SnO . Tin shows a ___MASK3___ similarity to both of its neighbors in group 14 , germanium and lead , and has two main oxidation states , + 2 and the slightly more stable + 4 . Tin is the 49th most abundant element and has , with 10 stable isotopes , the largest number of stable isotopes in the periodic ___MASK57___ , thanks to its magic number of protons . It has two main allotropes : at room temperature , the stable allotrope is  - tin , a silvery - white , malleable metal , but at low temperatures it transforms into the less dense grey  - tin , which has the diamond cubic structure . Metallic tin is not easily oxidized in air . Marcus Vitruvius Pollio ( born c . 80  70 BC , died after c . 15 BC ), commonly known as Vitruvius or Vitruvi or Vitruvio , was a Roman author , ___MASK95___ , civil engineer and ___MASK71___ engineer during the 1st century BC , known for his multi - volume work entitled " De architectura ". Loudon ___MASK75___ ___MASK47___ and Loudon ___MASK75___ Funeral Home , Inc . in Baltimore , Maryland , are locally owned and operated . Both the ___MASK47___ and the Funeral Home became privately owned in 2014 when they were acquired from SCI ( ___MASK45___ Corporation International .) Loudon ___MASK75___ Funeral Home , Inc . was built on the grounds of the historic cemetery by Stewart Enterprises in 1995 . SCI ( ___MASK45___ Corporation International ) acquired Stewart Enterprises in 2013 . The expanded cemetery was incorporated on January 27 , 1853 on 100 acres of the site of the " Loudon " ___MASK86___ , previously owned by James Carey , a local merchant and politician . The entrance to the cemetery is located at 3620 Wilkens Avenue . Graphite , archaically referred to as plumbago , is a crystalline form of carbon , a semimetal , a native element ___MASK26___ , and one of the allotropes of carbon . Graphite is the most ___MASK100___ form of carbon under standard conditions . Therefore , it is used in thermochemistry as the standard ___MASK58___ for defining the heat of ___MASK65___ of carbon compounds . Weiskittel - Roehle Burial Vault is a historic burial vault located in Section P , Loudon ___MASK75___ ___MASK47___ , Baltimore , Maryland . It is a rectangular ___MASK83___ made of cast iron built into the side of a hill , constructed to look like ashlar masonry and painted gray . It was made as the tomb of Anton W . Weiskittel who died in 1884 , a Baltimore iron founder . It was listed on the National Register of Historic Places in 1976 . In Euclidean geometry , a convex quadrilateral with at least one pair of parallel sides is referred to as a trapezoid ( pronounced : "/ tæpzd /") in American and Canadian English but as a trapezium in English outside North America . The parallel sides are called the " bases " of the trapezoid and the other ___MASK28___ sides are called the " legs " or the lateral sides ( if they are not parallel ; otherwise there are ___MASK28___ pairs of bases ). A " scalene trapezoid " is a trapezoid with no sides of equal measure , in contrast to the special cases below .