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Figure 4. This sandstone table tomb, located in Cedar Grove
                                                                  Cemetery, New London, CT, is an engineered grave marker structure
        Figure 2. These mid-19th century, single-element stone grave markers
                                                                  consisting of a horizontal stone tablet supported by four vertical table
        in the Grove Cemetery in Bath, NY, are set in a vertical position.
                                                                  “legs” with and a central column,.  Photo: Jason Church.
        Photo: Jason Church.
        slot” grave marker, the tabbed upper stone was set in a   supported by small corner supports or columns.
        slott ed base. More common today, the upper headstone     Grave shelters, also called grave houses, can be
        is secured with a technique that uses small spacers set   simple or elaborate wooden structures built over the
        on the base and a sett ing compound. This technique or    gravesite. Mausoleums are above-ground buildings
        one that uses an epoxy adhesive may be found on older     with compartments for multiple burials. Engineered
        markers where the stones have been reset.                 structures also include hillside and underground tombs.

                                                                  Guidelines for Evaluating and Registering Cemeteries
                                                                  and Burial Places, National Register Bulletin 41, provides
                                                                  a concise review of grave marker types.



                                                                  Materials

                                                                  Stone, brick, concrete, metal, and wood are the most
                                                                  common materials used for grave markers and for fences
                                                                  and gravesite enclosures in historic cemeteries. This
        Figure 3. A multi-element grave marker                    section briefl y describes the composition and properties
        from the early 19th century in the St.                    of these diverse materials
        Michael’s Cemetery, Pensacola, FL,
        consists of a vertical element with tabs                  Masonry materials
        (left image) into a slott ed base (right
        image).  Photo: Fran Gale.                                There is a wide variety of masonry materials used
                                                                  in historic cemeteries; some are naturally occurring
        Stacked-base grave markers use multiple bases to          and others man-made. Although there are notable
        increase the height of the monument and provide a         exceptions, most masonry materials are durable,
        stable foundation for upper elements. Tall, four-sided    have high compressive strength, and are resistant to
        tapered monuments, known as obelisks, are typically       weathering. As grave markers, they typically represent
        placed on stacked bases. Columns or upright pillars       the work of masons and stone carvers.
        have three main parts – a base, shaft, and capital.
        Multiple-element grave markers may also include           Stone is a naturally occurring material with a wide
        fi gurative or sculptural components. Traditionally,       range of properties and is available in a variety of colors
        stacked base grave markers were set on lead shims with    (Fig. 5). Geologists classify stone according to the way
        mortar joints or with lead ribbon along the outer edges.   in which it was formed with the three categories being
                                                                  igneous, sedimentary and metamorphic rock. Stone
        Grave markers can also be engineered structures.          found in cemeteries is predominantly quarried, though
        Examples of grave marker structures include masonry       the use of fi eld stones is not uncommon. The mineralogy
        arches, box tombs, table tombs, grave shelters, and       and chemical composition of stones vary. Some are
        mausoleums (Fig. 4). The box tomb is a rectangular        composed primarily of silicate minerals; granites,
        structure built over the gravesite. The human remains     sandstones, slate, and schist are examples. Other stones
        are not located in the box itself as some believe, but    contain calcium carbonate with marble and limestone
        rather in the ground beneath the box structure. The       in this group. Mineralogy, chemical composition, and
        table tomb is constructed of a horizontal stone tablet    physical structure of the stone infl uence weathering and

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