Protecting the world's infrastructure with rope access technology
Protecting the world's infrastructure with rope access technology
Keystone Co., Ltd. offers advanced rope access solutions that enable safe and efficient inspection and repair in high or confined locations—without scaffolding.
All work is performed by full-time certified rope access technicians. We conduct regular rescue training and maintain strict safety standards. With over 30 years of zero-accident performance, our team operates nationwide and can handle emergency deployments quickly and flexibly, offering manpower-intensive solutions when needed.
Seismic wave surveys and geophysical surveys are non-destructive techniques for investigating the condition of geological formations and internal structures. By applying vibrations or waves to the ground or structures and analyzing how these waves reflect and propagate, we can understand internal structures and anomalies (such as cracks, cavities, and deterioration).
Keystone Corporation boasts extensive experience and advanced technical capabilities in supporting seismic wave surveys and geophysical surveys. By utilizing our rope access technique, we can safely and rapidly perform operations even in high locations, steep terrain, and confined spaces where conventional scaffolding installation would be difficult.
Limestone cave surveys are investigations conducted to understand the condition of limestone caves (naturally formed underground spaces). By understanding cave structures, safety conditions, natural environmental changes, and signs of collapse, these surveys contribute to conservation and safety measures, academic research, and tourism development.
We have conducted diverse cave surveys both domestically and internationally over many years. Through the knowledge and techniques gained from this experience, we can flexibly respond to complex terrain and environments.
We utilize our proprietary three-dimensional rope access technique “SORAT” to safely and rapidly access high locations and confined spaces that are difficult to reach with conventional methods. This enables us to expand survey scope and achieve greater efficiency.
Keystone Corporation boasts extensive experience and a proven track record in surveying conduits and hand-excavated tunnels. For these surveys, we utilize rope access techniques to safely access high and confined spaces that are difficult to reach with conventional methods, enabling efficient inspection and surveying operations.
Main Survey Services
Keystone Corporation has accumulated extensive experience and specialized expertise in abandoned mine and vertical shaft surveys over many years. For internal surveys of high-risk abandoned mines and vertical shafts, we implement thorough safety management protocols and utilize rope access techniques to conduct reliable and efficient inspections and surveys.
Main Survey Services
Keystone Corporation possesses extensive experience and advanced specialized techniques in tree climbing and specialized tree removal utilizing rope access technology. We safely and efficiently perform tree felling and branch pruning operations in high and difficult-to-access locations that are challenging with conventional methods, while providing cost-effective services.
Situations Requiring Tree Climbing and Specialized Tree Removal
Keystone Corporation is a professional team with extensive experience and specialized expertise in raptor survey support. We utilize tree climbing techniques and rope access techniques on rock faces to safely and rapidly access nesting sites and monitoring environments. We maintain thorough survey accuracy and safety management, contributing to environmental conservation and ecosystem research.
Situations Requiring Raptor Survey Support
・Nesting Site Investigation and Monitoring We conduct close visual confirmation of raptor nests located at height in mountainous areas and forests, obtaining detailed understanding of nest conditions and breeding status.
・Monitoring Camera Installation For continued survey work, we install cameras at nesting sites and surrounding nest areas to observe and record wildlife behavior over extended periods.
・Inspection Support in Protected Areas and Designated Zones We support raptor protection activities within nature reserves, providing safe and efficient access necessary for field surveys.
Keystone Corporation is a specialized team with extensive experience and advanced techniques in rare species surveys, survey support, and transplantation operations. We excel at tree climbing and rock face work, utilizing rope access technique to safely, rapidly, and reliably access locations that are difficult to reach with conventional methods, conducting meticulous and accurate surveys.
Situations Requiring Rare Species Survey and Support
・Rare Species Habitat Survey
We conduct ecological surveys at height and on rock faces in mountainous areas and forests where rare species inhabit, understanding the condition of habitats and distribution patterns.
・Monitoring and Sampling
In long-term survey projects, we continuously observe changes in rare species and their environments, carefully collecting necessary samples.
・Rare Species Transplantation Operations
As part of nature conservation and environmental restoration projects, we safely and carefully proceed with transplanting rare species to alternative habitats.
Keystone Corporation is a professional team with extensive experience and advanced techniques in mountain survey and work guidance. We utilize advanced rope access technology [SORAT] to safely, rapidly, and reliably navigate even locations with difficult conventional access, supporting surveys and operations. We receive high praise from clients for our thorough safety management, on-site responsiveness, and excellent cost performance.
Situations Requiring Mountain Survey and Work Guidance
・Survey and Operations in Steep Mountain Terrain
We support surveying, environmental investigations, equipment installation, and other operations in locations with challenging terrain such as collapsed slopes and rock faces.
・Work Support on Cut Slopes and Steep Inclines
We serve as guides for surveys and repair work on cut slopes and steep inclines that cannot be safely accessed by conventional means.
・Natural Environment Conservation Activity Support
We support environmental conservation activities and research surveys in mountain regions, enabling safe field operations through specialized techniques.
Keystone Corporation provides specialized services for the rapid and safe recovery of drones that have crashed or become stranded in high or difficult-to-access locations. We utilize rope access technology to reliably handle any terrain and can deploy nationwide.
Service Features
1. Emergency Response (24/7 Available)
We can respond to sudden troubles. With just one phone call, we will rapidly deploy to the site. (Emergency Contact: 090-8753-2383, Contact: Nakatani)
2. 100% Success Rate for High and Difficult Location Recovery
Using rope access techniques, we safely and reliably recover drones even in locations that are difficult for conventional service providers to handle. We boast a 100% recovery success rate to date.
3. Rapid Response Speed of operation is our strength.
We accommodate urgent schedules and can perform nighttime operations, achieving recovery in short timeframes.
4. Expertise in Drone Handling Our company operates drones in-house on a regular basis, and our staff are well-versed in drone structure and operation. We recover drones safely without damage.
5. Strict Confidentiality and Safety Management We maintain careful information management at recovery sites and strictly observe confidentiality obligations. All workers are fully covered by workers’ compensation insurance, and our safety management system is comprehensive.
Examples of our deliverables.
[Report Contents]
• Executive summary
• Survey result development drawings (elevation views, plan views, photographic elevation views, etc.)
• Survey result cross-sectional drawings
• Photographs and photo commentary
* Inspections are conducted in accordance with various inspection guidelines.
* Damage assessment and countermeasure classification determination in accordance with each guideline.
* Inspection result organization is flexibly handled to meet your specific requirements.
This is a technical document detailing the work procedures.
Please download and take a look.
Q. Is rope access dangerous?
A. We strictly follow national safety laws. We’ve had zero accidents in 33 years.
Q. How much does it cost?
A. We adjust to your budget and consistently deliver high-quality results.
Q. Can work be done in rainy weather?
A. Yes. Rope-based work remains safe even in light rain or wind.
Q. Do you use just one rope? What about a lifeline?
A. We follow legal rope access standards. A secondary lifeline is not required.
Q. Are your workers climbers?
A. No—they are trained inspection professionals, not recreational climbers.
Q. What’s the typical turnaround time?
A. We flexibly adjust based on your scheduling needs.
Keystone delivers highly cost-effective, high-quality inspection services thanks to skilled and motivated technicians.
We never reject projects due to budget constraints—instead, we see challenges as opportunities to demonstrate our ingenuity and technical strength.
For consultations or estimates, please contact us. We’ll also flexibly adapt report formatting to your needs.
Open year-round, 24-hour reception
Rope Access Survey Specialists
Keystone Corporation
6-1 Kotobukisaki, Kanagahara Nagaokakyo City, Kyoto Prefecture 617-0856
