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~Work halted as plumbers protest . Pickets set up at entranâ€" ges to the University of Waâ€" terloo campus since last Wednesday have halted conâ€" struction of.the new Enâ€" vironmental Studies Buildâ€" ing II on campus. The 16 pickets, members of the United Association of Plumbers and Pipefitters, Local 527, formed the lines to complain about nonâ€"union plumbing and ventilation systems in the building. The building contract, which Ball Brothers Limitâ€" ed was awarded last June, included subâ€"contracting the by Stewart Sutheriand Fluoride not good for everybody The former executive director of the Science Council of Canada, Dr. Patrick McTaggartâ€"Cowan, believes the average person has nothing to worry about when drinking fluoridated water. But he warns, at the same time, that some people can‘t "tolerate‘"‘ the subâ€" stance and should be drinking nonâ€"treatâ€" ed water.. In a phone interview from his home in Orillia with the Chronicle, Dr. McTagâ€" gartâ€"Cowan said ‘"one has to realize that there‘ll be a small percentage of the poâ€" there i1 be a small percentage of the poâ€" pulation vtha don‘t need that Amount of fluoride (as contained in city drinking water)." : But, rather than eliminate fluoride from the water supply, he suggests munâ€" icipalities ‘"ensure there is a ready avaiâ€" lability of nonâ€"treated water."‘ He said individuals susceptible to poâ€" tential ill effects from fluoridation ‘‘have to be assured it‘s available through outlets handling bottled water, for those whose systems physiologically can‘t handle it (fluoride). The scientist sits as a member of a committee for the National Research Council (NRC) which helped coâ€"ordinate a 1978 report on fluoridation in the enâ€" vironment by Dr. Dyson Rose and John Marier. The report states that those most vulâ€" nerable to potential health hazards from fluoride include: â€" people with poor nutrition â€" people with impaired kidneys F â€" people with excessive thirst synâ€" drome associated with diabetes â€" people who work in fluoride â€" emitâ€" ting industries and those who live near McTaggartâ€"Cowan called author John Marier "a very knowledgeable fellow. If you look at those reports, you‘ll find the evidence is quite clear. There‘s a small percentage of people that can‘t take it." The former Science Council head said he believes cities ‘‘should warn the pubâ€" lic that those people who think they may be in that category (should) go and see a doctor. Because the knowledge is availaâ€" ble, it‘s a matter of making sure it gets to the right people. I feel quite strongly about that." 1 about tnal. . McTaggartâ€"Cowan said it is alk’ imâ€" portant for municipalities to constantly monitor the level of natural fluoride ocâ€" curring in drinking water, to keep levels safe. But, even with some risk involved, the scientist doesn‘t believe there‘s cause for alarm with the practice of fluoridatâ€" ing water. **Is there a possibility of a longâ€"term (negative) effect on people who seem to benefit by it?" he asked rhetorically. ‘‘The answer is I‘m not aware of any By Phil Jalsevac SCIENTIST WARNS plumbing to Twin City Plumbing and lleatilg a Waterloo. company that hires nonâ€"union workers. Jim â€" Ball, personnel manager for Bail Brothers, said in an interview with the Chronicle, that the picket lines have halted construcâ€" tion at the UW site. * ‘"‘The picket lines certainâ€" ly have made things difficult for us. Nobody is working on the building at the present time and I really don‘t know when things will get back to ‘"‘There may be some acâ€" tion by Thursday because Twin City Plumbing is going to the Labor Relations evidence that is so. The evidence of that is pretty compelling, so that the average person ... with a small intake of fluoride ... shouldn‘t consider any longâ€"term disâ€" benefit." _ 4 He went on to say that ‘"even though certain things are bioâ€"cumulative (such as fluoride), the body also has the capaâ€" bility of getting rid of material above a certain per cent." f < ‘"‘It has to be a political decision (whether to fluoridate or not),"‘ he said. **We, as scientists, can tell you what the risks and what the benefits are and then, like many other things, it has to be setâ€" tled by the will of the majority." The Roseâ€"Marier report basically conâ€" cedes there are potential health hat zards, particularly for those most vulâ€" nerable, when there is an overâ€"consumpâ€" tion of fluoride from the environment, whether from the air, food and drink, or water combined. The scientist also expressed a few thoughts on the heated arguments surâ€" rounding the fluoridation controversy. He said ‘"it‘s a subject that has just been tormented by misinformation, deliâ€" berately put into the public domain by those holding one view or the other. Both sides are equally guilty." Because of that situation, McTaggartâ€" Cowan said ‘"that‘s why we on the (NRC) committee spent a fair amount of time trying to put the record straight. When we get attacked by both sides ... and Rose and Marier have been attacked viciously ... we think we‘ve probably got it." But because it is usually only a small percentage of the population that could be adversely affected, and because there are many variables, the report does not condemn the practise of fluoriâ€" dating water, or limited use of fluoride on the whole. Referring again to the fluoride conâ€" troversy, Dr. McTaggartâ€"Cowan said **you‘d find it impossible to separate the truths from the deliberate untruths. In that field, it takes a specialist ... beâ€" cause the two camps are so deeply enâ€" trenched and it‘s become so emotional that neither side is really motivated to tell the truth and to admit their areas of ignorance." A In any event, the scientist said he‘s convinced there is at least a highâ€"risk group who shouldn‘t be drinking fluoriâ€" dated water. *‘*Even if it‘s only oneâ€"half per cent of the population,"" he said, ‘"the principle is there, that before you go adding stuff to civic water supplies, you have to make sure there is an alternative supply at a reasonable price." The National Research Council body McTaggartâ€"Cowan sits on is called the Associate Committee for Scientific Criâ€" teria on Environmental Quality. He said it was too early to tell if flse%cket.s would push the project‘s completion date ahead from the present April, 1981 objective. ‘"I.guess we‘ll be asking for an injunction to have the r.icketing stopped. Our wyers are going to ask for some kind of cease and deâ€" sist order so we can get back to work as soon as posâ€" sible," Groff said. Board in Tronto to have the pickets stopped," he said. Bob Groff, secretaryâ€" treasurer ‘for Twin City Plumbing and Heating, told the Chronicle his company will ask the Labor Relations Board to put a halt to the pickets. ‘a s 5 City motorists may have to make a few less trips to Bridgeport following a comâ€" mittee decision by council Monday that extends the permissible hours of sale for gas to 9 p.m., Monday to Saâ€" turday. Motorists stranded . with nearâ€"empty gas tanks after the present 7 p.m. closing of pumps have often had to reâ€" sort to trying to make it to the 24â€"hour stations in the Bridgeport section â€" of Kitchener. Hours for gas pumps extended to nine p.m. But a ‘‘conpromise‘‘ reâ€" commendation by the city‘s service station advisory committee could alleviate the problem if local operaâ€" tors pick up on their option to stay open the longer hours. All councillors present at Monday‘s meeting voted in favor of the recommendaâ€" tion, except for Alderman Mary Jane MeWhinney, who felt the proposal didn‘t go far enough. "I don‘t see the point‘‘ of adding only two extra hours to the schedule, MeWhinney The alderman indicated she felt some thought should have been given to letting Rick Cutler (left) and his father Les, members of the United Association of Plumbers and Pipefitters, Local 527, have been picketing at the entrances of the University of Waterioo since last Wednesday. The picket lines have haltâ€" ed construction of the new Environmental Studies Building 41. By Philip Jalsevac Waterioo Chronicie, Wednesday, September 17, 1980 â€" Page 3 stations stay open to midâ€" night, if not for 24â€"hour serâ€" vice. The change to the bylaw, to be confirmed by council this Monday, also calls for a minimum of four stations to be open, by permit, on Sunâ€" days from 10 a.m. to 8 p.m. As well, the chairman of the service station advisory committee, Alderman Roâ€" bert Henry, called for the scrapping of the bylaw that set up his committee in 1965. Henry said the bylaw was outdated and moved that a new committee be struck. His motion passed unaniâ€" Alderman â€" MeWhinney said she hoped the city‘s leâ€" gislation and bylaw commitâ€" tee would recommend a new committee have some reâ€" presentatives from ‘‘average citizens, not just those who serve their own interests." After the meeting, local operator Joe Gibel said he was opposed to changing the bylaw, but feels the new sysâ€" tem is going to straighten out by itself." And committee member Gaty Voight conceded *"we have to give the public serâ€" vice, even if it‘s not always profitable." In a random survey by the Chronicle some of that city‘s operators said they hoped the Waterloo decision won‘t affect the bylaws in Kitchener, which have been the same as those in Waâ€" terloo regarding the sale of Neighbors‘ gathering Meanwhile, reaction from Kitchener operators is Some said they would be willing to go along with a siâ€" milar change to extended hours in Kitchener while some said they would be making an appeal to their council to have the bylaw fall in line with this city‘s. If there are people who are at home and bored, the Lakeshore Y‘ Association wants them to come out and meet their neighbors every Wednesday morning at the Albert McCormick Arena. The group meets from 9:30 a.m. to 11 a.m. for cofâ€" fee and programs including crafts, tours or guest byitung is available for 50 t ava or . per child.