On July 24, it was reported that North Korea had begun to dismantle a rocket launching and testing site near Tonchang, an action which Kim had pledged to Trump.
 South Korean President Moon called the move "a good sign for North Korea’s denuclearization".
The North Korea monitoring specialist group 38 North found that the Sohae Station, a satellite-launch site in North Korea, was being demolished.
Satellite imagery shows that several significant structures were destroyed: a missile-launching stand and a building near a launchpad for satellites.
38 North suggested that it is an essential beginning step towards achieving a commitment made by Kim Jong Un at the June 12 Singapore Summit.
On 7 August, there is more progress on Dismantling Facilities at the Sohae Satellite and Missile Launching Station.
it entails the demolition of the test stand's concrete foundations, launch pad's gantry tower and pad foundation, etc.

While the previous dismantlement of the vertical engine test stand on 23 July, represents a fulfilment of Chairman Kim's arrangement with President Trump conducted publicly during the post-Singapore Summit press conference, activity at the launch pad and concrete foundation appears to go exceeding that pledge.
These activities, however, must be viewed cautiously as “principal steps” since neither are presently permanent or irreversible.

Concerning 38 North's scrutiny, it would characterize more durable and irreversible actions as there is no identified facility with equivalent capabilities elsewhere in the DPRK.

North Korea announced in December 2019 that it had recently conducted a "very important test" at the Sohae site.
Some analysts believed the test involved a new ICBM engine, as the country was believed to be migrating from its liquid-fueled missiles to new solid-fueled versions that were easier to transport, conceal and launch.
The country announced it had conducted a "crucial test' at the Sohae site days later.
On July 24, it was reported that North Korea had begun to dismantle a rocket launching and testing site near Tonchang, an action which Kim had pledged to Trump.  South Korean President Moon called the move "a good sign for North Korea’s denuclearization". The North Korea monitoring specialist group 38 North found that the Sohae Station, a satellite-launch site in North Korea, was being demolished. Satellite imagery shows that several significant structures were destroyed: a missile-launching stand and a building near a launchpad for satellites. 38 North suggested that it is an essential beginning step towards achieving a commitment made by Kim Jong Un at the June 12 Singapore Summit. On 7 August, there is more progress on Dismantling Facilities at the Sohae Satellite and Missile Launching Station. it entails the demolition of the test stand's concrete foundations, launch pad's gantry tower and pad foundation, etc.
While the previous dismantlement of the vertical engine test stand on 23 July, represents a fulfilment of Chairman Kim's arrangement with President Trump conducted publicly during the post-Singapore Summit press conference, activity at the launch pad and concrete foundation appears to go exceeding that pledge. These activities, however, must be viewed cautiously as “principal steps” since neither are presently permanent or irreversible.
Concerning 38 North's scrutiny, it would characterize more durable and irreversible actions as there is no identified facility with equivalent capabilities elsewhere in the DPRK.
North Korea announced in December 2019 that it had recently conducted a "very important test" at the Sohae site. Some analysts believed the test involved a new ICBM engine, as the country was believed to be migrating from its liquid-fueled missiles to new solid-fueled versions that were easier to transport, conceal and launch. The country announced it had conducted a "crucial test' at the Sohae site days later.
2018 North Korea–United States Singapore Summit