total depth
31Okoro Oilfield — Country Nigeria Block(s) OML 112 Offshore/onshore Offshore Operator(s) Afren …
32Kola Superdeep Borehole — Coordinates: 69°23′46.39″N 30°36′31.20″E / 69.3962194°N 30.608667°E / 69.3962194; 30.608667 …
33Battle of Smolensk (1943) — Second Battle of Smolensk Part of the Eastern Front of World War II Date 7 August–2 October 1943 Location …
34Conasauga shale — Coordinates: 33°41′55.09″N 85°36′14.74″W / 33.6986361°N 85.6040944°W / 33.6986361; 85.6040944 The Conasauga Shale is a Cambri …
35Infiltration (hydrology) — Infiltration is the process by which water on the ground surface enters the soil. Infiltration rate in soil science is a measure of the rate at which soil is able to absorb rainfall or irrigation. It is measured in inches per hour or millimeters… …
36Zacatón — is one of a group of five interconnected sinkholes, or cenotes, located in the northeastern state of Tamaulipas, Mexico. It is the deepest water filled sinkhole in the world with a total depth of 335 meters. [… …
37Mesa Oil Field — The Mesa Oil Field in Santa Barbara County, California. Other oil fields are shown in light gray. Country United States Region Santa Barbara south coast …
38Oloibiri Oilfield — Country Nigeria Region Niger Delta Location Bayelsa State Block(s) OML 29 …
39Rule of twelfths — The Rule of Twelfths is a rule of thumb for estimating the height of the tide at any time, given only the time and height of high and low water. This is important when navigating a boat or a ship in shallow water and when launching and retrieving …
40Cello — This article is about the stringed musical instrument. For other uses, see Cello (disambiguation). Cello Cello, front and side view String Other names Violoncello Hornbos …
