Contributed by STEVE CLARK
BROWNSVILLE – In the last signs of activity at SpaceX's future launch site in Boca Chica Beach, a 95,000-gallon liquid oxygen tank was delivered to the job site yesterday via a low loader.  The massive "LOX" tank, which can hold nearly 20 tankers, will be fully installed later this year.
SpaceX spokesman Sean Pitt said he points to the company's continued progress in developing the Boca Chica site 24 miles east of Brownsville.
"The delivery of a new liquid oxygen tank used to support propellant operations during take-off and vehicle testing represents the latest major part of the launch hardware to reach the installation site."
In February, SpaceX CEO and senior designer Elon Musk said that short hopper flights of the company's Big Falcon Rocket spacecraft are likely to take place in Boca Chica, possibly next year.
SpaceX focuses on developing the BFR to bring the first humans to Mars, Musk's ultimate destination, although it had originally planned to develop the smaller Falcon Heavy missiles for this purpose. The BFR missile / spacecraft system is being built in a SpaceX facility in the Port of Los Angeles. According to the Los Angeles Times, it is expected to be fully assembled.
SpaceX is headquartered in Hawthorne, California with launch facilities in California and Florida and a rocket engine in McGregor, Texas. 1
Rep. René Oliveira, D-Brownsville Commenting on SpaceX's application to the Texas Spaceport Trust Fund for Infrastructure Development Funds, in February said that the company's intentions for Boca Chica "went far beyond the original plan."
To date, SpaceX has more than 600 kilowatts of solar power installed at the site, plus two 86-ton ground station antenna crew tracking aircraft flights to the International Space Station aboard Dragon's reusable spacecraft. Early estimates had the first launch in 2016, though several delays pushed it back. SpaceX now plans to have Boca Chica operational by the end of 2018.
In 2008, the company's Falcon 1 was the first privately-developed liquid rocket to enter orbit. SpaceX's Dragon Spacecraft was the first privately built and operated spacecraft to be recovered from orbit during its maiden flight in 2010.
In 2012, another version of the Dragon was docked as the first private spacecraft to the International Space Station. In December 2015, SpaceX made another historic premiere by bringing a reusable Falcon 9 rocket into orbit and then returning it to the launch pad in a controlled vertical landing.
In April 2016, Falcon 9 landed on its fifth attempt on its drone ship, which of course is called "I still love you," off the coast of Florida, after a Dragon Robot spaceship was launched into orbit. Scientific American characterized it as "a dramatic masterpiece of engineering."
Last February, SpaceX celebrated the successful maiden launch of the Falcon Heavy, the world's most powerful rocket, and the controlled return of two of its three reusable boosters to Earth Rockets