Historical Marker

Knippa Trap Rock Plant

Historical marker location:
US 90, Knippa, Texas
( Highway 90 at Knippa Vulcan Entrance, Knippa.)
Marker installed: 1993
Marker size: 27" x 42"

Volcanic lava deposited here more than 60 million years ago cooled and hardened over time to form basalt, a dark igneous rock also known as trap rock. M. B. (Pete) Walcott purchased acreage here about 1904 and in 1907 formed the Genevieve Mining Co. to search for gold. Although little gold was found, substantial quantities of high quality trap rock were discovered. The Texas Trap Rock Company established a quarry about 1911 and shipments of rock began in 1912. A large highly-visible screening house was completed in 1914. By 1919 Knippa's trap rock plant, the largest in Texas at that time, was capable of producing about 100,000 tons of trap rock per year. The company transported the trap rock by spur line to the Southern Pacific Railroad in nearby Knippa. The company and its employees became an integral part of the community. Knippa High School named its football team the "Rockcrushers" in 1946. The trap rock operation, purchased by White's Mine Company in 1968, was acquired by Vulcan Materials Company in 1987. Trap rock has been applied to various uses such as railroad ballast, decorative stone, and as insulation material. Its historic and primary use, however, has been as a road paving material.

1994

As one of the most visible programs of the Texas Historical Commission (THC), historical markers commemorate diverse topics in Texas history, including: the history and architecture of houses, commercial and public buildings, religious congregations, and military sites; events that changed the course of local and state history; and individuals who have made lasting contributions to the state, community organizations, and businesses.

geology manufacturing
In the late 19th century, Texas became known for its cattle drives, in which cowboys would move herds of cattle from Texas to railheads in Kansas and other northern states. The cattle drives were dangerous and difficult work, but they played a key role in the development of the American cattle industry.
Texas random facts
Uvalde County, located in southwest Texas, has a rich and varied history that stretches back thousands of years. The area was originally home to various Native American tribes, including the Coahuiltecans and Lipan Apaches, who hunted and camped along the rivers and springs of the region. In the 18th century, Spanish explorers and missionaries began to settle in the area and establish missions, bringing with them a growing Hispanic population.

In the mid-19th century, Uvalde County experienced significant settlement and development fueled by the expansion of the cattle industry. Many ranchers and cowboys moved to the area, attracted by the abundant water sources and fertile grazing land. The establishment of the Great Western Cattle Trail in the late 1860s further reinforced Uvalde County's importance as a hub for the cattle industry.

During the late 19th and early 20th centuries, Uvalde County played a significant role in various historical events. It was the birthplace of John Nance "Cactus Jack" Garner, who served as the Vice President of the United States under Franklin D. Roosevelt. The area was also a center of political activism during the Mexican Revolution, attracting prominent figures such as Francisco Madero and Pancho Villa.

In more recent years, Uvalde County has continued to evolve and grow. The development of oil and gas industries in the mid-20th century brought economic prosperity to the region. Today, Uvalde County is a vibrant community with a mix of agriculture, ranching, and recreational activities, including hunting, fishing, and nature tourism, that continue to attract visitors from around the world.

This timeline provides a condensed summary of the historical journey of Uvalde County, Texas.

  • 1850: Uvalde County established as a county of the Republic of Texas
  • 1855: First permanent settlers arrive in the area
  • 1866: Fort Inge established as a military outpost
  • 1881: Railroad reaches Uvalde, spurring growth and development
  • 1883: City of Uvalde officially incorporated
  • 1891: The Uvalde Asphalt Paving Company is founded
  • 1900: Uvalde becomes a center for farming and ranching
  • 1914: Uvalde County Courthouse is completed
  • 1940: Garner Field established as a training facility during World War II
  • 1981: John Nance Garner Museum opens in Uvalde
  • 1998: Winter Garden Region becomes a major grape-growing area
  • 2010: Population of Uvalde County reaches over 26,000