The Orbital Sciences rocket that exploded after launch was powered by a
pair of rocket engines that were made during the Soviet era and
refurbished, experts said.
Why the rocket exploded is being investigated. From the BBC:
The rocket was due to carry nearly 5,000lb (2,200kgs) of supplies to
six astronauts aboard the International Space Station (ISS). It included equipment for astronauts to conduct tests on blood flow to the human brain and to analyse meteors.There was also equipment for experiments to examine the
growth of pea shoots in orbit and how the body's immune system reacts to
space travel.
More than 1,300lb (600kg) of food was on board, including pre-packaged meals and freeze-dried crab cakes.
I wonder if the company pays for the destroyed equipment and goods? And the damage to the launch pad?
Decades-Old Soviet Engines Powered The US Rocket That Exploded - Business Insider