MI1

MI1 or British Military Intelligence, Section 1 was a department of the British Directorate of Military Intelligence, part of the War Office. It was set up during World War I. It contained "C&C", which was responsible for code breaking.

Its subsections in World War I were:

In 1919 MI1b and the Royal Navy's (NID25) "Room 40" were closed down and merged into the inter-service Government Code and Cypher School (GC&CS), which subsequently developed into the Government Communications Headquarters (GCHQ) at Cheltenham.

Oliver Strachey was in MI1 during World War I. He transferred to GC&CS and served there during World War II. John Tiltman was seconded to MI1 shortly before it merged with Room 40.

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Abyss (roller coaster)

Abyss is a steel roller coaster located at the Adventure World amusement park in Perth, Western Australia. The $12-million attraction was announced in April 2013, and construction began the following month. Six months later, the ride opened to the general public on 1 November 2013.

The Abyss is a Euro-Fighter, a roller coaster model from Gerstlauer that features a "beyond-vertical" first drop which exceeds 90 degrees. In addition to several inversions, the Abyss reaches a top speed of 85 kilometres per hour (53 mph) along the two-minute, 630-metre-long (2,070 ft) ride. The roller coaster has been well received by the public.

History

In mid-2012, the 15-month phase of planning and construction of Abyss began. In April 2013, Adventure World announced on their Facebook page that they would be adding a $12 million, world-class attraction in 2013. By May 2013 construction had begun. In June 2013, a concrete slab was poured prior to the construction of a show building. Shortly after track arrived in July 2013, Adventure World officially announced that the ride would be a Gerstlauer Euro-Fighter, similar to Saw – The Ride. The ride was manufactured at the company's facilities in Germany before being shipped to Australia in forty-five 40-foot-long (12 m) shipping containers. Construction of the ride was completed by Gerstlauer crews over seven weeks. The name of the attraction was revealed on the Friday the 13th of September 2013 as Abyss. The announcement was made on Friday the 13th due to the ride's horror theme.Abyss officially opened to the public on 1 November 2013 as the single biggest investment in the park's history.