[DOC] [TLE] Why did they put canaries in coal mines? - io9 - Gizmodo [PAR] Jan 23, 2014 ... In the old days, a canary went down to work with coal miners. ... If the canary died
, they knew that they were soon to follow if they didn't run. ... He suggested a 
canary be used as a carbon monoxide detector, and ... This makes birds great at 
taking in oxygen, but extraordinarily sensitive to poisons in the air. [DOC] [TLE] The Evolution in Gas Detection Safety: From Canaries to High-tech ... [PAR] Aug 23, 2014 ... When the coal mining industry began to boom, workers were at high risk for ... 
From the early 20th century, birds were brought into the mines to detect harmful 
gases. ... based on their physical reactions and sensitivity to toxic gases. ... After 
canaries, miners and other workers used electronic gas detectors to... [DOC] [TLE] CSM 125 //Like a Canary in a Coal Mine - University of Exeter [PAR] It might seem strange, but Canaries were used in coal mines up until as recently 
as the 1980s. ... little songbirds were sent down with the miners to monitor 
poisonous gas ... Explosions and mine fires could cause swift rises in these 
dangerous gases; ... More susceptible to toxic gases, such as carbon monoxide, 
the canaries... [DOC] [TLE] Canary in a Coal Mine | TheMoreYouDig [PAR] Mar 17, 2016 ... What does it mean to be a 'Canary in a Coal Mine'  A Brief Mining History ... 
Canaries are especially sensitive to poisonous carbon monoxide and ... has an 
innate ability to detect small concentrations of dangerous gases and ... While 
birds are no longer used to test the air quality in coal mines (and all... [DOC] [TLE] Indoor Air Quality and Canaries - FeldkampEnterprisesInc [PAR] Nov 4, 2014 ... Monitoring Indoor Air Quality started in the coal mines nearly a ... Canaries (and 
sometimes mice) were used to alert miners to the presence of poisonous gases; 
... of distress in the presence of small quantities of the noxious gas. ... This makes 
birds great at taking in oxygen, but extraordinarily sensitive to... [DOC] [TLE] Who brought the canary into the coal mine? - CIM Magazine [PAR] Small animals like canaries proved useful for detecting poisonous gases 
because of ... Miners knew there was poisonous gas around when the bird began 
to sway on its ... The birds were, instead, primarily used by rescue crews 
following explosions ... However, even these lamps were not as sensitive as the 
yellow birds,... [DOC] [TLE] Gas Detection - ICEWeb [PAR] The Gas Detection page contains a range of comprehensive Gas Detector ... 
gases present, whilst a balancing, 'inactive' or 'non-sensitive' (n-s) sensor will not. 
... which can rapidly de-activate (or 'poison') other types of catalytic sensor. ..... 
Initially, these sensors were used for monitoring gas in coal mines, where they... [DOC] [TLE] Honeywell Gas Detection - Honeywell Analytics [PAR] the threat of flammable, toxic or Oxygen gas hazards and is typically a small 
device worn by an operator to monitor the breathing zone. Many sites incorporate 
a mix of both fixed and portable gas detection as part of their ...... often used for 
the concentration of toxic gases are parts per million (ppm) ...... in coal mines. [DOC] [TLE] Gas Detection Principles - Jjstech [PAR] Outside these limits, the mixture is not capable of combustion. ... Some gases are 
poisonous and can be dangerous to life at very low concentrations. ... The 
measurements most often used for the concentration of toxic gases are parts per 
..... as an early form of 'firedamp' gas detector in underground coal mines and 
sewers. [DOC] [TLE] Buttersafe  A Bird Holds Its Breath - Reddit [PAR] Buttersafe  A Bird Holds Its Breath | r/comics at reddit.com. ... ..coal miners 
brought canaries into coal mines as an early-warning signal for toxic gases, ... 
The bird is in a mine where it is used by miners as an early warning for leaking 
gas. ... The way I understand it was that canaries

Question: Sensitive to poison gases, these small birds were used as gas detectors in coal mines
Answer: Canaries