id	keyword
american_scientific_journal-1092	drilling
american_scientific_journal-1092	time
american_scientific_journal-1092	non
american_scientific_journal-1092	research
american_scientific_journal-1092	operations
american_scientific_journal-1092	equipment
american_scientific_journal-1092	process
american_scientific_journal-1092	technology
american_scientific_journal-1092	making