Media Media 2023. 11.2 You Tube 2016 Hard ware start up Spiral Inc.（Interview Ver） Media 2023. 3.16 Verification of 3D coordinate acquisition inside a tunnel using non-SLAM autonomous flying drones. Media 2022. 11.20 Demonstration experiment of using drones for internal inspections of Tokachi Dam in Shintoku Town. Media 2022. 8.2 Obayashi Corporation conducted a demonstration experiment of an audit corridor inspection system utilizing drones at a dam construction site. Media 2022. 6.23 Spiral has been selected as one of the Venture 100 companies to update Nikkei Construction Architecture. Media 2020. 8.4 Spiral with our development partner in India has been selected the subsidy of promotion for ASIA digital transformation by Japanese government, in August 2020. Media 2018. 9.22 One of the biggest events for startup, Disrupt in San Francisco, our company was carried by the article published by JETRO.