The Alamo Cement Company was chartered after Englishman William
Loyd discovered what he believed to be a natural cement rock near
San Antonio. With the help of chemist George H. Kalteyer, who
confirmed that the rock's lime and clay could produce Portland
cement, Loyd organized a group of investors to form the Alamo
Portland and Roman Cement Company, the first Portland cement plant
west of the Mississippi and one of the earliest in the United
States.The original plant was powered by steam engine and ground
ten barrels of cement daily. The company diversified its enterprise
with lime burning and the sale of building stone and entered the
sidewalk construction business to help it survive. It obtained the
patent rights for the process by which sidewalk blocks were cut
into sections to accommodate expansion and contraction in changing
temperatures from the original inventor. In 1881 the company
changed its name to Alamo Cement Company. Its principal product was
known by the brand name Alamo. Kalteyer later organized the Buckeye
Portland Cement Company in Ohio to produce what was known as
"artificial stone" before use of the term "concrete." After
Kalteyer's death in 1897, Charles Baumberger became company
president and led the firm's further expansion. In 1908 the company
was reorganized under the name San Antonio Portland Cement Company
and, after material at its original site was exhausted, the plant
was moved to a place that came to be known as Cementville. The area
became Baumberger Plaza in 1944, and in 1990 the smokestack and
kilns of the original plant remained on the site. The quarry became
the Japanese sunken gardens at Brackenridge Park, in San Antonio.
Baumberger was succeeded by his son, C. Baumberger, Jr., who served
until 1968. In 1979 Robert Koch of Vigier Cement a Swiss firm, and
Sandro Buzzi of Presa, Limited, in Italy purchased the firm and
changed its name back to Alamo Cement Company. In 1977 the original
plant site was placed on the National Register of Historic Places,
and in 1980 the new owners constructed a modernized plant with
updated equipment. In keeping with Charles Baumberger's will,
assets of his estate, including the proceeds from the sale of the
company (1979), were used to set up a trust fund to provide college
scholarships to San Antonio high school students. Between 1979 and
1993 the estate generated over $20 million and sent 1,802 students
to college. Limestone often contains variable amounts of silica in
the form of chert and/or flint, as well as varying amounts of clay,
silt and sand as disseminations, nodules, or layers within the
rock. The primary source of the calcite in limestone is most
commonly marine organisms. These organisms secrete shells that
settle out of the water column and are deposited on ocean floors as
pelagic ooze or alternatively are conglomerated in a coral reef
(see lysocline for information on calcite dissolution). Secondary
calcite may also be deposited by supersaturated meteoric waters
(groundwater that precipitates the material in caves). This
produces speleothems such as stalagmites and stalactites. Another
form taken by calcite is that of oolites (oolitic limestone) which
can be recognized by its granular appearance. Limestone makes up
about 10% of the total volume of all sedimentary rocks. Limestones
may also form in both lacustrine and evaporite depositional
environments. Calcite can be either dissolved by groundwater or
precipitated by groundwater, depending on several factors including
the water temperature, pH, and dissolved ion concentrations.
Calcite exhibits an unusual characteristic called retrograde
solubility in which it becomes less soluble in water as the
temperature increases. When conditions are right for precipitation,
calcite forms mineral coatings that cement the existing rock grains
together or it can fill fractures. Argillaceous limestone is a
limestone containing an appreciable amount (but less than 50%) of
clay.
Questions to answer:
- What year was the Alamo Portland and Roman Cement Company
chartered?
- What were some of the things that the quarry was used to build
in Texas?
- Looking at the old quarry buildings how were they
constructed?
- Take a look around at the quarry, describe the layout and how
do you think that the workers extracted the limestone.
- Travel back to end of the quarry you will find a water fall
there. Estimate the height of the waterfall (which will give you
the depth of the quarry) and take your picture at this
location.