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单词 sump
释义

sumpn.

Brit. /sʌmp/, U.S. /səmp/
Forms: late Middle English sompe, 1500s–1600s sumpe, 1600s– sump, 1700s–1800s sumph, 1800s sumpt.
Origin: Either (i) a borrowing from Dutch. Or (ii) a borrowing from Middle Low German. Etymons: Dutch somp; Middle Low German sump.
Etymology: < (i) Middle Dutch somp, sump (Dutch regional (West Flanders) zompe ), or its cognate (ii) Middle Low German sump (German regional (Low German) Sump ), cognate with Middle High German sumpf (German Sumpf ), all in the senses ‘marsh, swamp, morass, pool, puddle’ < a different ablaut grade of the Germanic base of swamp n.Compare West Frisian sompe , and ( < Middle Low German) Old Swedish somper (Swedish sump ), early modern Danish sump , sumpe (Danish sump , (now regional) sumpe ). Specific senses. With sense 1 compare swamp n. In the specific uses in mining and metallurgy perhaps after German Sumpf in its specific senses ‘drainage pit’ (already in Middle High German), ‘pit used to collect water at the bottom of a mine, deepest part of a mining shaft’ (late 14th cent.), ‘pit at the bottom of a furnace to collect the metal at the first fusion’ (16th cent.). Earlier attestation in a place name. Earlier currency in sense 1 is apparently implied by the field name Brunes sumpe (1241, Dedham, Essex (now lost)); compare also le Sompe (1450; now The Sump, Hockley, Essex).
1. A marsh, swamp, morass. Later also: a muddy pool or puddle. Now somewhat rare (chiefly regional in later use).
ΘΚΠ
the world > the earth > land > landscape > marsh, bog, or swamp > [noun]
marsheOE
fenc888
sladec893
moorOE
mossOE
marshlandlOE
lay-fena1225
lay-mirea1225
moor-fenc1275
flosha1300
strother?a1300
marish1327
carrc1330
waterlanda1382
gaseync1400
quaba1425
paludec1425
mersec1440
sumpa1450
palus?1473
wash1483
morass1489
oozea1500
bog?a1513
danka1522
fell1538
soga1552
Camarine1576
gog1583
swale1584
sink1594
haga1600
mere1609
flata1616
swamp1624
pocosin1634
frogland1651
slash1652
poldera1669
savannah1671
pond-land1686
red bog1686
swang1691
slack1719
flowa1740
wetland1743
purgatory1760
curragh1780
squall1784
marais1793
vlei1793
muskeg1806
bog-pit1820
prairie1820
fenhood1834
pakihi1851
terai1852
sponge1856
takyr1864
boglet1869
sinkhole1885
grimpen1902
sphagnum bog1911
blanket bog1939
string bog1959
the world > the earth > water > lake > small body or puddle > [noun]
plashlOE
pulkc1300
pludc1325
puddlec1390
sumpa1450
flush1487
dub?a1513
plashet1575
pool1596
slab1610
pudge1671
flodge1696
pant1807
pothole1867
push1886
splashet1896
a1450 Castle Perseverance (1969) l. 425 Myth I ryde be sompe and syke.
1825 J. T. Brockett Gloss. North Country Words Sump, Sumph, a bog, a swamp, a miry pool.
1851 Gloss. Provinc. Words Cumberland Sump, a puddle.
1905 J. H. McCarthy Dryad 265 Swift Spanish soldiers came..picking their way easily over the sump in which the Athenians wallowed.
1986 B. Lopez Arctic Dreams ix. 360 In harness they dragged sledges across the trench and rubble of sea ice and through vast sumps of soft snow.
2. Mining.
a. An excavation made underground, typically at or near the bottom of a mine shaft, to collect water seeping into the tunnels of the mine.dredge-sump: see the first element.
ΘΚΠ
society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > reservoir or sump
sump1633
sump hole1754
standage1842
dib-hole1883
1633 in R. S. France Thievely Lead Mines 1629–1935 (1951) 188 A Lad to drawe a sump.
1653 E. Manlove Liberties & Customes Lead-mines Derby 159 They may cause open'd, Drifts, and Sumps, to see If any one by other wronged be.
1778 W. Pryce Mineralogia Cornubiensis iii. iii. 145 They are mindful to sink their first Shaft in order that they may..have a little Sump or pit in that place as a bason for receiving the water of the Lode.
1866 Morning Star 18 Dec. 6/2 The break-down of a portion of the winding machinery..has prevented the sumph being emptied of its water.
1922 H. H. Stoek et al. Stud. Coal Mine Haulage Illinois iii. xiv. 49 The method generally employed for removing the coal that falls into a sump is to have it hand shoveled into a mine car.
1954 W. D. Walker & J. H. Dumire Coal-mine Hazards from Overlying Gasoline Pipelines (U.S. Bureau Mines Information Circular) No. 7708. 7 The water surface at the central sump of the inactive mine was examined, and evidence of gasoline was not found.
2004 Jrnl. Mammal. 85 379/2 Recycled water from the pit sump.
b. Chiefly British regional. A mine shaft that does not communicate with the surface, used esp. to provide access or ventilation to different levels of the mine. Also: the bottom of a shaft or far end of a drift under construction. Obsolete.
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society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > passage > horizontal
drift1653
sump1681
heading1811
driftway1843
drive1856
day drift1859
downdrift1868
header1872
1681 T. Houghton Rara Avis in Terris ii. 101 Having first plum'd your Shaft, Turn, Lobs and Sumps by the Rules afore-deliver'd.
1747 W. Hooson Miners Dict. sig. U3v The second is so proportioned to supply the first and third Sump, to supply the second, and so on.
1796 J. Sinclair Statist. Acct. Scotl. XVIII. 142 A shaft or sump, as the miners term it, was made to the depth of several fathoms, immediately below the bottom of the waste.
1802 J. Mawe Mineral. of Derbyshire Gloss. Wind-holes, shafts or sumps sunk to convey wind or air.
1833 T. Sopwith Mining Distr. Alston Moor xi. 129 From the sump a drift is made, and the vein, if rich, is worked by headings and stoups as before.
1849 G. C. Greenwell Gloss. Terms Coal Trade Northumberland & Durham 54 Sump,..in driving a stone drift, or in sinking a pit, that portion kept a yard or more in advance of the drift or pit, to enable the gunpowder to act to greater advantage upon the parts left.
1898 Trans. Manch. Geol. Soc. 25 293 Then a tunnel was driven at right angles in the marls for a short distance and a second shaft called the sump sunk at the end of this tunnel to the rock salt.
c. British regional (northern). The front section of a block of coal that is being taken out of the coalface. Obsolete.
ΚΠ
1849 Mining Almanack 403 Sump,..the part of a judd of coal first brought down.
1880 Trans. Mining Inst. Scotl. 1879–80 1 54 In those cases a hewer may not make such a large jud, and frequently only kirves part of the width, taking out a ‘sump’ or a ‘back end’, as the case may be.
1888 G. C. Greenwell Gloss. Terms Coal Trade Northumberland & Durham (ed. 3) 65 Punch-Prop,..Also a short prop..placed by a hewer under his sump or back-end when there is any danger of its dropping down.
3. Metallurgy. In a furnace: a pit or receptacle used to collect molten metal. Obsolete. rare.
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society > occupation and work > equipment > furnace or kiln > furnace > parts of furnace > [noun] > other parts of furnaces
sump1673
stoking-hole1683
stoking-place1744
mid-feather1748
bottoming hole1815
trunnel-head1819
keystone1821
vault1825
well1825
nose-hole1832
fore-stone1839
nose1839
tongs-carriage1839
tunnel-head1843
glory-hole1849
1673 J. Ray Coll. Eng. Words 114 The mine when melted runs down into the Sump.
1884 C. G. W. Lock Workshop Receipts 3rd Ser. 424/2 The metal is tapped off into an iron sump.
4.
a. A naturally occurring or man-made pit, pond, reservoir, or tank used to collect water, other liquids, or dissolved or suspended material contained in liquids; a salt pond, cesspool, etc.
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the world > the earth > water > lake > pool > [noun] > well
water piteOE
wellOE
pitOE
pulkc1300
draw-wellc1410
draught-wellc1440
winchc1440
brine-well1594
salt spring1601
sump1680
pump well1699
spout-well1710
sump hole1754
pit-well1756
sink1804
bucket-well1813
artesian well1829
shallow well1877
dip-well1894
garland-well1897
village pump1925
the world > the earth > water > lake > pond > [noun] > for evaporating salt
sump1680
sump hole1754
saltgardens1848
the world > food and drink > food > food manufacture and preparation > salt manufacture > [noun] > pond or well providing salt-water
sump1680
society > occupation and work > equipment > receptacle or container > [noun] > for fluid > sunk or indented
sump1680
well1848
scoop1871
the world > physical sensation > cleanness and dirtiness > sanitation > provision of sewers > sewage treatment > [noun] > use of cesspools or lagoons > cesspool or pit
sink1413
midden pita1425
sinkhole1456
suspiralc1512
sentine1537
dung pit1598
muck pit1598
sinker1623
bumby1632
sump1680
sump hole1754
jaw-hole1760
recess1764
cesspool1783
dead-hole1856
soil-tank1861
cesspit1864
lagoon1909
sewage lagoon1930
1680 Tynemouth Parl. Reg. in Archaeologia Aeliana (1898) New Ser. 19 211 He was drowned in Mr. Lawson's sumpe.
1682 J. Collins Salt & Fishery 10 The Sea-water they commonly at Spring-Tide let into Ponds called Sumps, from whence 'tis pumpt into their Pans.
1791 R. E. Raspe tr. I. Born Amalgamation Gold & Silver Ores 128 Assays and samples must be taken of the coarsest and heaviest sediment in the bottom of the washing-tub, and of the sediments in the sumps.
1862 S. Smiles Lives Engineers III. 45 He had a wooden box or boot made, twelve feet high, which he placed in the sump or well, and into this he inserted the lower end of the pump.
1893 Newcastle Daily Jrnl. 11 July 6/2 It was not true that there were three or four houses with ‘sumps’ in them, giving off offensive odours.
1914 Official Gaz. (U.S. Patent Office) 24 Mar. 1008/2 The continuous method of washing and cleaning evaporated salt which consists in forming within a sump a saturated brine solution, placing the solution in agitation by withdrawing the same from within the sump and thence returning the withdrawn solution to the said sump.
1975 Sci. Amer. Oct. 23/3 As fast as the heavy water leaked out it was collected in a sump and pumped directly back into the reactor.
2005 National Business Rev. (N.Z.) (Nexis) 23 Sept. 52 A hearing before independent commissioners..will determine if the airport can continue to channel waste water into sumps in the ground that are surrounded by filtering stones and sand.
b. figurative. Something likened to a drainage pit or cesspool.
ΚΠ
1963 T. Morris & P. Morris Pentonville iii. 69 Pentonville represents one of the sumps of the English prison system; a receptacle into which the sludge is continuously drained.
2003 New Statesman (Nexis) 8 Sept. In the sump of society, a vortex into which everyone is sucked, all manner of yellow pressmen, porn stars and gangsters figure.
5. A reservoir containing lubricating oil for an engine; (in later use) spec. one attached to the bottom of the crankcase of an internal combustion engine; = oil sump n. at oil n.1 Compounds 4a(b). Also called oil pan.
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society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > parts of > other parts
thermo-siphon1834
crank-case1878
manifolda1884
hot tube1889
sump1894
hit-and-miss governor1897
engine pit1903
retard1903
head1904
gasket1915
gravity tank1917
cylinder block1923
transfer case1923
swirl chamber1934
manifolding1938
ignition switch1952
catalytic converter1955
small block1963
cat1988
1894 Electr. Engineer 30 Nov. 629/1 The oil escaping from the bearings drains into the lower part of the crank-chamber and thence into a sump placed below the level of the engine-room floor.
1904 Automotor Jrnl. 30 July 899/1 The oil is then allowed to drain back into the sump from which the pump takes its supply.
1980 J. McClure Blood of Englishman i. 9 Droopy was removing the sump... He..extended a hand for a No. 8 ring spanner.
2011 T. Fry Caring for your Car iv. 53 The drain plug will be set into the bottom of the sump/oil pan, or on the side close to the bottom.
6. Caving and Diving. An underground passage or chamber in which water collects; esp. one that is flooded.
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the world > the earth > land > landscape > low land > hole or pit > [noun] > pot-hole or swallow-hole
water sink1553
swallow1610
swallow-hole1660
estuary1665
swallet1668
cockpit1683
sinkhole1772
sink1791
pot1797
water-swallow1811
shake-hole1823
pothole1826
fleet-hole1839
spout hole1849
katavothron1869
ponor1890
sump1951
1951 C. H. D. Cullingford Exploring Caves iii. 46 Strictly speaking, a sump is a chamber where water collects at the lowest level in a system where water circulates (compare the ‘sump’ in a motor-car engine).
1967 Potholing & Caving (‘Know the Game’ Ser.) 20/1 To penetrate sumps which are too long for ‘free diving’ (some of them more than 200 ft. in length), breathing apparatus has to be used.
2018 Mail on Sunday (Nexis) 15 July The first section of the dive was the longest sump—350 yards entirely underwater.

Compounds

sump drift n. Mining a drift (drift n. 15) that conveys water to a sump.
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society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > passage > horizontal > types of
level1721
roadway1832
side drift1837
narrow1850
entry1854
rise heading1872
cross-head1877
sump drift1880
gopher-drift1881
stone-heading1892
1880 Mining & Sci. Press (San Francisco) 7 Aug. 85/2 Work in the sump drift on the 3000 level progresses well.
1908 Bi-monthly Bull. Amer. Inst. Mining Engineers Nov. 776 At C, Fig. 3, is a sump-drift, supplying sump, A, with clear water, from which level it is raised to the surface by pumps.
1980 CIM Bull. (Canad. Inst. Mining & Metall.) Apr. 76/2 Mining in the open pit had advanced to within 90 feet of the 600-level sump drift by the end of 1978.
sump fuse n. Mining a waterproof fuse used in underwater blasting.
ΚΠ
1833 Freeman's Jrnl. (Dublin) 27 Aug. For wet holes, Sump Fuze and Waterproof Chargers may be had, by the use of which Rocks may be blasted with ease several feet under water.
1840 Mechanics' Mag. 26 Dec. 603/2 Having placed the cartridge bag with the necessary quantity of powder therein and sump fuse attached, in the hole, a sufficient quantity of sand..is to be poured in to fill the hole.
1950 Sydney Morning Herald 7 Oct. 15/3 (advt.) Heavy pistons, liners, and crank-shafts...5 cases blue sump fuse (34290ft) and various other items.
sump guard n. a cowling used to protect the sump of a motor vehicle from being damaged by road debris.Quot. 1951 shows a use of oil-sump guard in the same sense (cf. oil sump n. at oil n.1 Compounds 4a(b)).
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society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [noun] > body or bodywork > covering over specific parts
cowling1917
sump guard1957
1951 Commerc. Motor 7 Dec. 487/1 An oil-sump guard made from heavy-gauge corrugated steel is an accessory for Big Bedford vehicles which has recently been marketed.]
1957 Commerc. Motor 15 Feb. 79/2 Various accessories..include a range of fresh-air heaters, a 60W. fog lamp, windscreen washers, reversing lamp, an extra driving mirror, a petrol-tank lock and a sump guard.
1980 J. Barnett Palmprint vii. 62 A heavy stone clanged against the sumpguard.
2001 Times 22 Oct. (Sports Daily) s7/3 A rock, the size of a cricket ball, bent the protective sump guard under the engine.
sump head n. Mining (now chiefly historical) the uppermost part of a sump shaft.
ΚΠ
1747 W. Hooson Miners Dict. sig. T3v Spurfork, a small sort of Fork..sometimes used to hold Doorsteds in Drifts, or at Sumpheads asunder.
1887 Geol. Mag. 3rd Decade 4 407 The Workmen themselves, but more especially the Labourers, at the Sump-heads and in the Gates, have been often affrighted with such a Noise and dismal Rattle, as if sometimes the Shaft had run in.
1996 S. Murphy Grey Gold vi. 127 Thomas Jewell and his three partners cut out a sump head and sank the first part of the sump which bears his name nearly 12 fm from February to June 1873.
sump hole n. a pit or hole (either in a mine or at ground level) used to collect water or other liquids; a cesspool; also figurative (cf. cesspool n. 3).
ΘΚΠ
the world > the earth > water > lake > pool > [noun] > well
water piteOE
wellOE
pitOE
pulkc1300
draw-wellc1410
draught-wellc1440
winchc1440
brine-well1594
salt spring1601
sump1680
pump well1699
spout-well1710
sump hole1754
pit-well1756
sink1804
bucket-well1813
artesian well1829
shallow well1877
dip-well1894
garland-well1897
village pump1925
the world > the earth > water > lake > pond > [noun] > for evaporating salt
sump1680
sump hole1754
saltgardens1848
society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > reservoir or sump
sump1633
sump hole1754
standage1842
dib-hole1883
the world > physical sensation > cleanness and dirtiness > sanitation > provision of sewers > sewage treatment > [noun] > use of cesspools or lagoons > cesspool or pit
sink1413
midden pita1425
sinkhole1456
suspiralc1512
sentine1537
dung pit1598
muck pit1598
sinker1623
bumby1632
sump1680
sump hole1754
jaw-hole1760
recess1764
cesspool1783
dead-hole1856
soil-tank1861
cesspit1864
lagoon1909
sewage lagoon1930
1754 Acct. 5 Oct. in Denison Family Papers (W. Yorks. Archive Service: WYL160/129/4) Dressing the Sumphole.
1840 Jrnl. Statist. Soc. 2 404 Why is it that parts of the North-east and North-west wards are germs of fever and hot-beds of disease? Because sump-holes, stagnant water, and inundated or damp cellars everywhere abound in them.
1919 Proc. Amer. Philos. Soc. 58 327 Well-constructed trenches are floored with a duckboard path and under-drained by a gutter with occasional sumpholes which are emptied by suction pumps.
1955 S. J. Perelman Let. 20 Nov. in Don't tread on Me (1987) 180 Someone a good deal more articulate than me will have to chronicle the miles of cheap shoe-stores, costume jewelry booths,..not to mention the tide of raddled faces that undulates past... This really is the sump-hole of the universe.
2006 J. Nadin Lancs. Mining Disasters i. iv. 25 Rescuers descended into the sump hole where the mine water collects at the shaft bottom.
sump man n. Mining (now historical) a worker who assists a pitman in sinking mine shafts or operating pumping machinery.
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society > occupation and work > worker > workers according to type of work > manual or industrial worker > miner > [noun] > one who works specific mining equipment
sump man1825
pipeman1863
pumpman1902
winding-engineman1904
1825 B. Disraeli Inq. Amer. Mining Companies (ed. 3) 47 Upwards of 140 English, in the various capacities of smelters, metallurgists,..blacksmiths, sumpmen, &c. form the expedition.
1921 Classified Index Occupations (U.S. Bureau of Census) 34/1 Sump man, coal mine.
2000 B. A. Tenebaum & J. N. McElveen in O. Marshall English-Speaking Communities Lat. Amer. i. iii. 53 John Rule..had recruited throughout Cornwall for the captains, carpenters, miners, sumpmen, engineers, wheelwrights, foundrymen and mill-men.
sump oil n. (a) oil collected from the sump of an oil well (now rare); (b) lubricating oil in the sump of an engine, esp. that of a motor vehicle.
ΚΠ
1903 Daily Californian (Bakersfield) 26 June 5/3 From the best information sump oil seems to be selling at from 20 to 25 cents at the well.
1950 Pop. Mech. May 148/1 Every year about 500,000,000 gallons of sump oil are spread on dirt roads to lay the dust, hauled away to dumps, burned as low-cost fuel, or poured down the drain.
2013 Daily Tel. (Nexis) 28 Sept. 6 A failed turbo oil seal might have caused the turbo to siphon sump oil into the combustion chambers.
sump pit n. now chiefly North American a pit or hole used to collect water or other liquids; (now) esp. one dug beneath the basement of a building to collect rainwater and excess moisture, from where it is pumped out.
ΚΠ
1864 Sheffield & Rotherham Independent 15 Oct. Suppl. 9/6 A number of men were engaged in emptying the ‘sump pit’ at the bottom of the shaft.
1916 Struct. Conservation 2 11/2 We used a system of drains connected with a sump pit under the concrete floors of these deep basements.
1972 Arctic Anthropol. 9 5/2 Excavators at Itazuke found six very deep pits... Their situation suggests instead that they were dug as sump pits to aid in drainage.
2004 R. German Remodeling Basement i. 10/2 Water seeping around or under the foundation and floor flows to the lowest point,..drains to the sump pit, and is pumped away.
sump plank n. Mining (now rare) a plank used in covering the bottom of a shaft.
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society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > bottom of mine or working > part of temporary bottom
sump plank1845
1845 Wolverhampton Chron. 15 Oct. 3/2 A man on the pit bank, Edward Thomas, hooted to the engine-man to ‘short’, and as soon as he did so, heard the deceased fall on the sump planks.
1872 Engineering 24 May 352/2 The sump planks at the bottom of the shaft are likewise exposed to violent concussions from the cage coming down to rest upon them.
1931 Colliery Guardian 21 Aug. 652/2 The sump planks were not, as a rule, put back after bailing operations.
sump pump n. chiefly North American a pump used to remove water or other liquid from a sump; (in later use) esp. one used to drain the sump pit of a building.
ΚΠ
1875 E. H. Knight Amer. Mech. Dict. II. 1108/1 Hogger pump, the top pump in the sinking-pit of a mine. The lower is the sump-pump.
1933 Sewage Wks. Jrnl. 5 807 The sump pump handles wash water from the lower floor of the station, and from the underdrains of the building.
2017 Chicago Daily Herald (Nexis) 30 July 11 As floodwater approaches, a key weapon in keeping it out of your house is a functioning sump pump.
sump shaft n. Mining (now chiefly historical) a shaft that has a sump (sense 2a) or that provides access to different levels of a mine (cf. sense 2b).
ΘΚΠ
society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > shaft > other types
stulm1693
whim-shaft1759
sump shaft1778
channel1816
staple1818
incline shaft1842
raise1877
stair-pit1883
subshaft1889
1778 W. Pryce Mineralogia Cornubiensis 171 Sumph shaft western bottoms.
1869 R. F. Burton Explor. Highlands Brazil I. xxv. 249 Higher up the [pumping] process is carried on by the plunger-bolts, until the water is conveyed through the sump-shaft to the surface.
1913 Amer. & Eng. Annotated Cases XXVIII. 20/1 There was a ‘sump’ shaft, with a cage in it, communicating between the two levels [of a mine]. This the men often used, although it was dangerous.
2013 Western Morning News (Plymouth) 13 July (Art & Antiques section) 4 Unusual photographic postcards and images including..a group of miners at the new sump shaft Old Dolcoath.
This entry has been updated (OED Third Edition, September 2019; most recently modified version published online March 2022).

sumpv.

Brit. /sʌmp/, U.S. /səmp/
Origin: Formed within English, by conversion. Etymon: sump n.
Etymology: < sump n.
Mining.
1. intransitive. To excavate a mine shaft. Obsolete. rare.
ΘΚΠ
society > occupation and work > industry > mining > mine [verb (intransitive)] > dig shaft
sump1700
stope1778
drift1849
drive1859
raise1872
1700 2nd Abstr. State of Mines Bwlchyr-Eskir-Hyr 12 in W. Shiers Familiar Disc. conc. Mine-adventure We are Sumping and driving in the new Work in good firm..Oar.
1789 J. Williams Nat. Hist. Mineral Kingdom I. 277 Many [miners]..were sumping, driving, and roofing in other parts of the work.
2. transitive. To insert (a cutting device) into a coalface or rock face. Occasionally also intransitive: to enter or make a cut in a coalface or rock face. Also with in, into. Cf. sump n. 2c, sumping n. 2.
ΘΚΠ
society > occupation and work > industry > mining > mine [verb (transitive)] > other (coal-)mining procedures
underbeit1670
buck1683
bank1705
bunding1747
urge1758
slappet1811
tamp1819
jowl1825
stack1832
sprag1841
hurry1847
bottom1851
salt1852
pipe1861
mill1868
tram1883
stope1886
sump1910
crow-pick1920
stockpile1921
spec1981
society > occupation and work > industry > mining > mine [verb (intransitive)] > other specific activities in mining > in coal-mining
trap1842
ride1854
overwind1858
sump1910
1910 Coal Trade Jrnl. 29 June 515/2 They sump in on one side and travel across the place on a chain.
1921 Coal Age 5 May 786/1 The cutter bar is placed against the roof and sumped in to its full length of 9 ft.
1927 Goodman Mining Handbk. (Goodman Manuf. Co.) 402 When sumped, the cutterarm is fed downward and the shearing cut completed.
1966 S. D. Woodruff Methods Working Coal & Metal Mines III. 176 The cutting head is lowered to the floor and sumped into the coal.
2014 N. Bilgin et al. Mech. Excavation in Mining & Civil Industr. xv. 323 They [sc. chain saws] reduce production and time losses due to their ability of sumping horizontally or vertically to enter a new bench.
This entry has been updated (OED Third Edition, September 2019; most recently modified version published online March 2022).
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