CT scan showing radiofrequency ablation of a liver lesion. RFA may be performed to treat tumors in the lung, liver, kidney, and bone, as well as other body organs less commonly. Once the diagnosis of tumor is confirmed, a needle-like RFA probe is placed inside the tumor.
After the completion of the iron staircase in the monument's interior, the Washington Monument was first accessible to the public in 1886, closed much of 1887 until it could be better protected from vandals, and reopened in 1888 with a public elevator.
The Washington Monument opened to the public in 1888. The 1893 Rand, McNally travel guide to Washington noted: âA staircase of 900 steps wends its way to the top, around an interior shaft of iron pillars, in which the elevator runs; few people walk up, but many people descend that way.â.