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In the city of Kolkata, India more than 10,000 manhole covers were taken in two months in 2004. These were replaced with concrete covers, but these were also stolen, this time for the rebar inside them.^[24]

Regular maintenance and inspections of gate valves are essential to ensure their proper functioning during emergencies. Fire departments and facility managers should implement a routine check-up schedule to identify any potential issues, such as leaks or mechanical failures. Additionally, training personnel to quickly and efficiently operate gate valves is crucial. In a high-stress environment, such as a fire scene, familiarizing firefighters with the equipment can expedite their response time.

The use of timber not only reduces the carbon footprint associated with the production and transportation of materials but also plays a role in promoting biodiversity when integrated into green spaces. These bollards can be designed to accommodate climbing plants or serve as bird perches, further enhancing urban ecosystems.

In contemporary times, cannon bollards are often found in heritage sites and historical waterfronts, serving as a tangible reminder of a bygone era. Many cities have preserved these unique structures as part of their commitment to celebrate and honor their maritime heritage. By maintaining cannon bollards, communities highlight the significance of their historical ties to the sea, encouraging education and interest in maritime history.