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  2. Unified Soil Classification System - Wikipedia

    en.wikipedia.org/wiki/Unified_Soil...

    For example, GW-GM corresponds to "well-graded gravel with silt." If the soil has more than 15% by weight retained on a #4 sieve (R #4 > 15%), there is a significant amount of gravel, and the suffix "with gravel" may be added to the group name, but the group symbol does not change. For example, SP-SM could refer to "poorly graded SAND with silt ...

  3. Gravel - Wikipedia

    en.wikipedia.org/wiki/Gravel

    ISO 14688 grades gravels as fine, medium, and coarse, with ranges 2–6.3 mm (0.079–0.248 in) for fine and 20–63 mm (0.79–2.48 in) for coarse. One cubic metre of gravel typically weighs about 1,800 kg (4,000 lb), or one cubic yard weighs about 3,000 lb (1,400 kg). Gravel is an important commercial product, with a number of applications.

  4. Grain size - Wikipedia

    en.wikipedia.org/wiki/Grain_size

    Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials . This is different from the crystallite size, which refers to the size of a single crystal inside a particle or grain.

  5. List of mines in the Philippines - Wikipedia

    en.wikipedia.org/wiki/List_of_mines_in_the...

    The following list of mines in the Philippines is subsidiary to the Lists of mines in Asia article and Lists of mines articles. This list contains working, defunct and future mines in the country and is organised by the primary mineral output(s) and province. For practical purposes stone, marble and other quarries may be

  6. Sand - Wikipedia

    en.wikipedia.org/wiki/Sand

    ISO 14688 grades sands as fine, medium, and coarse with ranges 0.063 mm to 0.2 mm to 0.63 mm to 2.0 mm. In the United States, sand is commonly divided into five sub-categories based on size: very fine sand ( 1 ⁄ 16 – 1 ⁄ 8 mm diameter), fine sand ( 1 ⁄ 8 mm – 1 ⁄ 4 mm), medium sand ( 1 ⁄ 4 mm – 1 ⁄ 2 mm), coarse sand ( 1 ⁄ 2 ...

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Velarde map - Wikipedia

    en.wikipedia.org/wiki/Velarde_map

    The Philippines believes that the label Panacot on the map refers to the Scarborough Shoal, and it is the first map with label Panacot on it. [ 20 ] [ 21 ] Professor Li Xiaocong of China pointed out that the label Panacot in the 1734 map was not Scarborough Shoal, and the three groups of islands, Galit, Panacot and Lumbay also appeared in the ...

  9. List of Philippine provinces and regions by poverty rate

    en.wikipedia.org/wiki/List_of_Philippine...

    This is a list of regions and provinces of the Philippines by poverty rate as of 2021. The international poverty rate used by the World Bank is used in the following list. The national poverty rate of the Philippines was estimated to be at 22.4% in early 2023.