Sellers latest invention, the Safety Clamp, makes it easier and more environmentally-friendly for oil companies to install tank liners, the massive plastic tarps inside large-volume above-ground open storage tanks. Because they're so easy to handle and install, Safety Clamps are less likely to be dropped on workers below the tank rim than the traditional clumsy models now used in the oil field. Their orange powder coating helps make sure they don't get lost to rust away in the grass near a tank. Since they are less likely to be dropped, they are also less likely to cause punctures in the plastic liners which, in turn, helps prevent fluid loss and can help protect the environment. Because workers can install them in seconds around the rim of a tank, oil companies are saving money using his invention.