id	keyword
esrj-52781	rock
esrj-52781	mass
esrj-52781	slopes
esrj-52781	schist
esrj-52781	joint
esrj-52781	cut
esrj-52781	table
esrj-52781	engineering
esrj-52781	classification
esrj-52781	rmr
esrj-52781	mica
esrj-52781	strength
esrj-52781	quality